The dissolved oxygen in a reservoir was monitored for one year. Based on this data, what might greatly reduce the available dissolved oxygen in an aquatic habitat?
A) thermal pollution
B) fertilizer run-off
C) increased water turbidity
D) decrease in pH due to acid rain
Answers
Answer:
I would say A
Explanation:
Judging from the graph, you can tell that the dissolved oxygen line (the black one) is lowest during July and some parts of September ( or between those two). At the same time, you can see the blue line - for water temparature - is highest; which means that an increase in temperature ( or thermal energy) results in lower dissolved oxygen. The only answer choice that relates to higher temperatures is A, thermal pollution which is just a result of companies or people using natural bodies of water for industrial purposes.
Related Questions
Select all the correct answers
Which
o statements are true about a system?
A system is a group of objects analyzed as one unit
Energy that moves across system boundaries is conserved
There's only one way to define the boundaries of a system
All systems are made by humans
Answers
Answer:
A system is a group of objects analyzed as one unit.
check
Energy that moves across system boundaries is conserved.
Explanation:
Took the test and got it correct hopefully this is helpful for anyone later.
A system is a collection of items that have been examined as a single entity, and it conserves energy as it moves across system boundaries. So, the correct options are A and C.
What is system?A system is made up of several interconnected or interacting parts that behave in a predetermined way to generate a coherent whole. A system's borders, structure, and purpose—all impacted and surrounded by its environment—are expressed in how it functions.
Objects are analysed collectively as a system.
A system that readily exchanges matter and energy with its surroundings is said to be open. A system that is closed is one that solely exchanges energy, not matter, with its surrounds. With its surrounds, a system isolated does not exchange energy or matter.Therefore, the correct options are A and C.
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3. Which is a likely place for primary succession?
Answers
Primary succession is one of two types of biological and ecological succession of plant life, occurring in an environment in which new substrate devoid of vegetation and other organisms usually lacking soil, such as a lava flow or area left from retreated glacier, is deposited. In other words, it is the gradual growth of an ecosystem over a longer period.
a possible expenation for a set of facts that can be tested by further investigation is called ___
Answers
Answer:
I believe it's Hypothesis.
Explanation:
Hope my answer has helped you!
The ATP molecule shown is the universal energy source for cellular activities. Which of these processes is used to break down glucose into ATP that is usable by the cell?
Answers
Aerobic respiration
Answer: Cellular respiration
Explanation:
Cellular respiration can be defined as the process by which the glucose is converted into adenosine tri phosphate. The conversion of the glucose molecule into adenosine tri phosphate take place in the mitochondria of the cell.
The energy that is required by the cells is fulfilled by this molecule only. The plants and the animals both gets energy by this process.
Hence, the correct answer is cellular respiration.
Which of the following statements describes how material can differentiate into different layers? Choose all that apply.
A. Less dense material floats
B. Denser material floats
C. Denser material sinks
D.Less dense material sinks
Thank you~
Answers
I guess the answer is A and C
Answer:
Option- (A) and (C): Both, of them are valid points.
Explanation:
Materials differentiation inside earth's layers:Earth layers are differentiated in the different layers of earth layers, on the basis of different properties they have, as the earth is made up of a very fine layers of different elements.
Below the continental plates we have, the following layers inside earth's structure:
The mantle,The outer core,The inner core.As due to earth's properties it cools down all the materials in such a manner that the denser material sinks to the center, while the less dense floats near to the mantle layer of the earth.During gene expression, DNA is transcribed into RNA in the nucleus. Then, the RNA is translated into proteins in the cytoplasm. Through what physical barrier must the RNA pass when moving from the nucleus into the cytoplasm?
A.
nucleolus
B.
cell wall
C.
plasma membrane
D.
nuclear envelope
Answers
Answer: Nuclear Envelope
Explanation: The nuclear envelope (NE) (also known as the perinuclear envelope, nuclear membrane, nucleolemma or karyotheca) is a double lipid bilayer that encloses the genetic material in eukaryotic cells. The nuclear envelope also serves as the physical barrier, separating the contents of the nucleus (DNA in particular) from the cytosol (cytoplasm).
Answer:
Nuclear envelope
Explanation:
just did it on study island
On the pH scale, which value is considered neutral
Answers
A neutral pH value is 7
A neutral ph level is 7
While hiking in a rural area, you encounter a wetland and conclude that it’s a swap. which feature helped you reach this conclusion?
Answers
Answer:
It's located near a lake. That's why
Explanation:
Answer:
it's located near a lake is the answer :)
Explanation:
Henry came across the______diversity.
Answers
Answer: im not sure but i thinks its BIO diversity
Explanation: Henry came across the BIO diversity x
Answer:
I believe it's Ecological diversity.
Explanation:
Hope my answer has helped you! :)
what happens during hydrolysis pls help me pls pls pls plox
Answers
Answer:
Explanation:
the answer above this is correct
What must be true for organisms to be considered the same species
Answers
Answer: organism and reproduce and produce offspring
What type of cell reproduction has gametes?
A. Sexual
B. Asexual
C. Fusion
D. Budding
Answers
Answer:
A: Sexual
Explanation:
The female gametes are called the ova or the egg cells and the male gametes are called sperm.
The type of cell reproduction that produces gametes is sexual reproduction. Therefore, option (A) is correct.
Gametes are the specialized reproductive cells, such as sperm and egg cells, that are involved in sexual reproduction. In sexual reproduction, two parent organisms contribute genetic material to form offspring with a combination of traits from both parents. This involves the formation and fusion of gametes through processes like meiosis and fertilization.
Asexual reproduction, on the other hand, involves the production of offspring without the involvement of gametes or the fusion of genetic material from two parents. Options C (Fusion) and D (Budding) are not accurate in describing the specific type of cell reproduction that produces gametes. Therefore, option (A) is correct.
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Explain the following statement: Volcanic eruptions aid in the creation of an atmosphere.
Answers
Answer:
Explaination: When volcanoes erupt, they are helping in the atmospheres's creation.'
I might be wrong, correct me if I am :)
Volcanic eruptions contribute to the creation of our atmosphere by releasing several gases, including water vapor and carbon dioxide. Over time, these gases have formed our atmosphere and influenced our planet's climate.
Explanation:The statement indicates that volcanic eruptions play a significant role in forming our planet's atmosphere. Volcanoes emit a variety of gases during an eruption, including water vapor, carbon dioxide, sulfur dioxide, and nitrogen compounds. Over millions of years, these gases have contributed to the formation of our atmosphere. For instance, water vapor released from volcanic eruptions condensed to form clouds and eventually, rain, helping create our oceans. This process also released oxygen into the atmosphere. Similarly, carbon dioxide, another significant gas released by volcanoes, contributes to the 'greenhouse effect,' a natural process that warms the Earth.
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John and Jennifer have just gotten married. John has blood type B and Jennifer has blood type O. John’s father has blood type B and his mother has blood type O. What are the possible blood types of their offspring?
Answers
John and Jennifer's offspring can have either type B (inherited from John) or type O (inherited from either parent) blood. Types A and AB are not possible as neither parent carries the A antigen.
Explanation:The topic of this question involves Blood Types and inheritance. In humans, the blood types are determined by the ABO blood group system. John's blood type is B, which is determined by the presence of B antigens on the surface of the erythrocytes. Jennifer has an O blood type, which means that she has neither A nor B antigens. The possible blood types of their offspring are determined by the alleles each parent contributes.
John's possible genotypes could be BB (if he inherited B genes from both parents) or BO (if he inherited an O gene from his mother). As Jennifer has blood type O, her genotype will be OO.
The possible genotypes of their offspring would therefore be BO (from a B gene from John and an O gene from Jennifer) or OO (from an O gene from both parents). Translated into blood types, their children could have either blood type B (from the BO genotype) or O (from the OO genotype), but not A or AB, as neither parent carries the A gene.
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Which of the following pairs accurately connects a macromolecule to its monomer ?
A. Lipids–phosphate groups
B. Carbohydrates–amino acids
C. Proteins–nitrogenous bases
D. Nucleic acids–nucleotides
Answers
D is the correct answer.
●Option D is the required answer
PLEASE HELP!! :)
Many body systems work together for proper functioning of the body and to maintain internal homeostasis.
The ___________ works to break down food eaten before exercising. The ___________ takes in the nutrients obtained from the food. The body sweats as a mechanism to cool off, because the _____________ is working to flush out toxins.
1.
a) circulatory system
b) digestive system
c) excretory system
2.
a) circulatory system
b) digestive system
c) excretory system
3.
a) circulatory system
b) digestive system
c) excretory system
Answers
Answer:
Every number gives the same result - it should be B) - A) - C).
Explanation:
This answer needs no elaboration, unless you have more questions regarding it.
Answer: Digestive system, circulatory system, excretory system
Explanation:
The body works in a proper condition by the coordination of different types of system that is present in the body. The food that we eat is broken down into simpler forms to be utilized by the body.
This is the function of digestive system
The nutrients, vitamins and minerals are absorbed and circulated to every part of the body by Circulatory system. The body sweats as a mechanism to cool down the body temperature in response to the outer environment.
This is done in order to maintain homeostasis. This is controlled by excretory system of the body.
When analyzing a source, what strategy would be best to help determine if a topic is biased?
Answers
To determine if a source is biased, first collect your initial impressions and assess if opinions are presented as facts. Research the author's neutrality and credibility, and examine multiple sources to ensure a comprehensive perspective on the topic.
When analyzing a source for potential bias, several strategies should be employed. To begin with, measure your initial impressions of the source. Check if the information appears exaggerated or if the source is mixing opinions with facts, and also note any extreme viewpoints or charged language. Additionally, consider the purpose of the writing \'97 is it to inform, or to persuade? This distinction is key in identifying bias.
Researching the author can offer insights into possible bias. Investigate whether the author is an impartial expert or if they have a track record of bias on the subject matter. Moreover, it is important to read multiple sources on the topic to cross-check facts and detect omitted or overlooked critical information.
Always evaluate the credibility and reputability of sources, considering details such as the author\'s professional background and potential affiliations. For example, if a source's position on a topic can be predicted based on the author's job or political affiliations, this could indicate a significant bias. Lastly, remember that bias can also lie in the omission of information, which is why it is crucial to read widely from various sources to get a more balanced view of the topic at hand.
In what environment do coral reefs form?
Answers
Coral reefs are generally found in clear, tropical oceans. Coral reefs form in waters from the surface to about 150 feet (45 meters) deep because they need sunlight to survive. The three types of reefs include fringing reefs, barrier reefs, and atolls.
The environment that is optimum to grow coral reefs is clear water where the sunlight can reach, and the temperature should be 20 to 30 degrees Celsius.
What are coral reefs?Coral reefs are cnidarians, made up of polyps of calcium carbonate. They live underwater. They make home to many underwater organisms. Food and medicines are also made from them.
It is the main source of food for billions of people. The farming of corals is also done. It grows in optimum temperature and condition, and the sunlight is needed for its growth.
Thus, clear water with a temperature of 20 to 30 degrees Celsius, where sunshine may penetrate, is the ideal condition for the growth of coral reefs.
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in what age range and development area do individuals test the rules and limits of authority figures?
age range? type answer here. development area? type answer here.
Answers
Hi!
The age range is the teenage years, namely 10-16. The development stage is piagets stage. Sorry, I learned this from my sister so it might not be 100% accurate.
Hope this helps!
In the diagram below, the observer is experiencing a spring low tide. What is the most likely position of the Sun? (Note: Shading has been removed from the diagram so it cannot be used to determine the Sun's position.)
Answers
The observer is experiencing a spring low tide, which occurs when Earth, the Moon, and the Sun are aligned. The most likely position of the Sun in the diagram would be either directly above or directly below the observer, aligning with the Earth and Moon.
Explanation:In the diagram provided, the observer is experiencing a spring-low tide. In order to determine the most likely position of the Sun, we need to understand that spring tides occur when Earth, the Moon, and the Sun are aligned. The tidal effects from both the Moon and the Sun add together during spring tides, causing the largest tides. Therefore, the most likely position of the Sun in the diagram would be either directly above or directly below the observer, aligning with the Earth and Moon.
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Does the caffeine provide any other benefits for the plant, such as enhanced pollination?
Answers
Answer:
Yes, caffeine does provide following benefits to plants:
1) Caffeine provide benefit to the plant in a way by enhancement of pollination process. This occurs by preferential pollination of such flowers whose nectar contain a small quantity of caffeine.
2) Caffeine that is present in leaves and seeds is a way that kills insects thus protecting them from damage.
3) Caffeine increases the learning ability of bees. Bees sucking nectar, having even a low concentration of caffeine showed a long term memory.
Caffeine in plants acts primarily as a defensive compound, deterring herbivores and killing insects. It doesn't directly enhance pollination, but may indirectly promote plant survival and recovery from damage. The role of pollination can be fulfilled by various species if certain pollinators were to disappear.
Explanation:Caffeine is a secondary metabolite produced by some plants, including the coffee plant, and it does indeed offer potential benefits to the plant. However, there hasn't been significant research to suggest that caffeine enhances pollination. Instead, the primary roles of caffeine in plants are related to defense and damage recovery.
Plants produce caffeine as a defensive compound to deter herbivores and kill insects. This, in turn, may indirectly enhance the ability of the plant to recover from damage, enhancing its survival rate.
With regard to pollination, plants have evolved various strategies to attract pollinators. While some offer food rewards like nectar, others, such as some species of orchids, use food deception. The pollinators, attracted by bright colors and scent indicating food, end up picking the pollen and transporting it to another flower.
In the absence of certain pollinators, plants would not necessarily be adversely affected as different species of insects or other animals can take on the role of pollination. For instance, if bees were to disappear, other pollinators could step in to fulfill the task, thereby not significantly affecting the ecosystem or the production of produce.
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Please help me with this answer please thank you!
Answers
1 maps with D.
2 maps with H.
3 maps with A.
4 maps with C.
5 maps with G.
6 maps with E.
7 maps with B.
8 maps with I.
9 maps with F.
Describe the basic molecular structures AND primary functions of the four major categories of biological macromolecules:
a. Carbohydrates
b. Lipids
c. Proteins (amino acids)
d. Nucleic acids
Answers
Carbohydrates get broken down into glucose by the acid in your stomach and small intestine, and the glucose gives energy to your cells especially brain cells and neurons. Lipids like triglycerides store energy for cells. Proteins build up many parts of your body. Nucleus acids ( RNA & DNA ) give information to cells, they are in the nucleus of cells. Carbohydrates like monosaccharides have a formula of C6,H12,O6 and are kind of hexagon shaped. Different lipids have different structures, triglycerides is like three lines because they are made of 3 fatty acids and glycerol. Different proteins have different structures, alanine is lined with oxygen atoms and hydrogen. Dna is two lined with proteins on it and RNA is one lined with proteins.
HOPE THIS HELPS :)
Answer:
Carbohydrates
Explanation:
Carbohydrates get broken down into glucose by the acid in your stomach and small intestine, and the glucose gives energy to your cells especially brain cells and neurons. Lipids like triglycerides store energy for cells. Proteins build up many parts of your body. Carbohydrates like monosaccharides have a formula of C6,H12,O6 and are kind of hexagon shaped. Different lipids have different structures, triglycerides is like three lines because they are made of 3 fatty acids and glycerol. Different proteins have different structures, alanine is lined with oxygen atoms and hydrogen. DNA is two lined with proteins on it and RNA is one lined with proteins.
Which type of molecule makes up DNA?
Lipid
Nucleic acid
Protein
Water
Answers
What type of molecule makes up DNA?
B. Nucleic Acid
Answer:
B... Hope This helped
YAY!!!
An organism catches small insects in a web in order to get energy. This organism can be classified as an _____________.
A. Prokaryotes
B. Eukaryotes
C. Unicellular
D. Multicellular
E. Autotrophs
F. Heterotrophs
Answers
Answer: heterotroph
Heterotrophs must consume food in order to get energy. In this case, the organism can be classified as a heterotroph because it consumes small insects to get energy.
Answer:
b
Explanation:
Which choice is likely to result in the most competition? A) Two hawk populations utilize different populations of mice and small birds as their main food source. B) Snakes eat mice, reducing the mice population in an area. C) A bird population eats berries and their droppings seed new areas creating more berry bushes. D) A drought reduces the amount of grass for rabbits to feed on.
Answers
Answer:
D) A drought reduces the amount of grass for rabbits to feed on.
Explanation:
This is the condition that shall result in the most competition.
This is because the grass shall be insufficient food for the rabbit population.
Therefore the rabbit population shall be struggling to feed on the scarce remaining grass and hence cause a terrible competition.
Answer:
d) a drought reduces the amount of grass for rabbits to feed on.
Explanation:
rabbits eat the grass. If it reduces the grass, rabbits compete over it or starve.
how can DNA be useful in phylogeny?
A. DNA from every organism in a class is sequenced to identify genetic mutations that have occurred
B. DNA sequences are rearranged to predict how species could evolve in the future
C. DNA sequences from different species can be compared, giving us more information about their evolutionary relationships
D. DNA isn’t useful in phylogeny, as morphological characteristics are used exclusively in phylogeny
Answers
Answer:
Option C, DNA sequences from different species can be compared, giving us more information about their evolutionary relationships
Explanation:
Phylogeny is the study of evolution of species since ages and also working out inter species evolutionary relationship.
In molecular phylogeny the DNA and its structure is very essential to work out the evolution of species.
The information about the structural arrangement of genome, genetic mutation, difference in the nucleotide sequence etc, helps to establish a common ancestry relationship between two or more individual.
Since all the genetic information is carried by DNA, thus assessment of DNA helps to identify the common thread of evolution and in this way DNA is useful in phylogeny.
Answer:
C. DNA sequences from different species can be compared, giving us more information about their evolutionary relationships
Explanation:
penn foster
Explain why a changing environment can lead to extinction of a species.
Answers
Answer:
A quick change in environment can cause the extinction of a species because the animal in question may not be able to adapt fast enough. For example, urbanization can cause an animal species may go extinct because of the sudden change.
If there is a slow change in environment, the animal in question may go extinct because of lack of resources. If it is a predator, its prey may migrate. Therefore, it will starve.
Hope this help. Good luck!
A person has developed a condition where his heart valves are damaged. Use complete sentences to explain the effects of such a condition on the circulatory system.
Answers
Answer:
Your heart has four valves that keep blood flowing in the correct direction. In some cases, one or more of the valves don't open or close properly. This can cause the blood flow through your heart to your body to be disrupted
Explanation:
If heart valves are damaged, it will restrict
blood flow through your heart to your body.
What is circulatory system ?The circulatory system serves as the system comprises blood vessels which transport blood away from and towards the heart.
This system contains Arteries and veins, and any damage to them will not allow transport of blood which could lead to complications.
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The "Nariokotome boy" fossil indicates that H. ergaster
A. could grow as tall as modern humans.
B. had short lower limbs.
C. was thin-boned.
D. all of these.
Answers
Answer:
A. could grown as tall as modern humans
Explanation:
The Nariokotome boy is the most complete fossil of an early hominid ever found. This have gave an opportunity for very detailed and accurate examination of this Homo ergaster specimen. The age of dying of the Homo ergaster boy is still debatable, ranging from 8 to 11 years of age. This boy is tall 160 cm, and it is thought that the growth would have been slightly quicker than that of the Homo sapiens, but slower than that of the chimpanzees, so it estimated that it would have reached full growth by the age of 14. Also, it is believed that the approximate height that this Homo ergaster boy would have reached is 185 cm, making it as tall as the modern day humans, or even taller than the majority of the humans in the present.