Which animal population do scientists frequently study in order to identify specific ways to evaluate the impacts of contaminants on biological communities?

a. bottlenose dolphins

b. giant tortoises

c. mallard ducks

d. swan geese

Answers

Answer 1

Answer:

mallard ducks I think so

Answer 2

Answer:

D.

Explanation:

Galapagos tortoises have been and continue to be threatened by predation and habitat destruction from invasive species, and increasing human


Related Questions

A population of birds lives on a small island. Another population of the same species lives on the mainland. The
distance between the island and the mainland is too great for birds to fly back and forth. Recently, a series of
sandbars and tiny islands have formed between the island and the mainland.

Answers

Answer:

The birds can now reach the Island.

Explanation:

The birds can now reach the Island because there is a sandbars and tiny Islands where they can rest for sometime as well as feed on the insects present at that sandbars and tiny Islands. Before these sandbars and tiny islands, the birds can't reach to the mainland due to large distance between Island and mainland so they have no capability to fly such large distance until the tiny Island and sandbars are appeared in the ocean.

Answer: an increase in gene flow between the bird populations

Explanation: :)

Glycine is highly conserved amino acid residue in the evolution of proteins. why?

Answers

Answer:

Glycine is a highly conserved amino acid residue in the evolution of proteins. Why? Glycine has the smallest side chain of any amino acid. Its size often is critical in allowing polypeptide chains to make tight turns or to approach one another closely.

Explanation:

Use the Punnett square to determine the ratio of offspring with the described trait to the total number of offspring

Answers

Explanation:

X y

X XX Xy

y Xy yy

capital letter is dominant

small letter is recessive

example

capital letter could be brown eyes

small letter could be blue eyes

How to push out feeces quietly in public. I have a situation!!!

Answers

Answer:

oop-

Explanation:

did you eat too much paw patrol cake?

Answer:

WTH

Explanation:

But do bring/buy a nappy next time.!!!

The structural integrity of bacteria is to peptidoglycan as the structural integrity of plant spores is to

Answers

Answer:

Lignin.

Explanation:

The structural integrity of plant spores is lignin that is present in many parts of the plant. This lignin provides hardness to the plant body which help them to stand the plant erect. If this lignin is not present in the plant body the plant will not stand erected. This lignin is present in large amount in the stem of plant body so that's why the lignin provides structural integrity to plant spores

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What is the definition of specific heat capacity?
O A. The amount of heat required to break the chemical bonds in 1 g of
a substance
B. The amount of heat required to form 1 g of a substance from its
elements
C. The amount of heat required for 1 g of a substance to undergo a
phase change
D. The amount of heat required to raise the temperature of 1 g of a
substance by 1°C

Answers

Option D is the correct option..

D. The amount of heat required to raise the temperature of 1 g of a

substance by 1°C

why is there a rich capillary network around all endocrine glands​

Answers

the hormones secreted by the endocrine glands enter the circulation and are carried throughout the body to act upon target cells located far away from the secreting glands. Thus, endocrine glands are highly vascularized with many small capillaries among the nests of endocrine cells.

Answer:

the hormones secreted by endocrine gland enter the circulation and are carried throughout the body to act apon targeted cells located far away from the secreting gland. that's the reason why endocrine glands are vascularized with small many capillaries amongst the nest of their cells

In Osmosis, a cell becomes turgid when it:
A. expands from absorbing too much water.
B. bursts from absorbing too much water.
C. bursts from absorbing too much water.
D. contracts from absorbing too much water.

Answers

Answer:

A

Explanation:

This occurs when a plant cell is placed in a hypotonic solution.A solution were the external solution concentration is less than the internal concentration of the cell, causing water to rush into the cell.

During osmosis by absorbing too much water from outside the cell, a cell becomes turgid. The correct option is A.

What is osmosis?

Osmosis is the passage of water molecules via a cell's partially permeable membrane from a solution with a large concentration of water molecules to a solution with a lower concentration of water molecules.

Osmosis occurs when the concentration gradient of water reaches zero or when the water's hydrostatic pressure equals the osmotic pressure.

Endosmosis and exosmosis are the two main types of osmosis that occur when water moves across the cell membrane. When cells are placed in a hypotonic solution, endosmosis occurs, which is the movement of water into the cell.

When cells are placed in a hypotonic solution, exosmosis occurs, which is the movement of water out of the cell.

Thus, the correct option is A.

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Scientists have found fossils of cyanobacteria that are more than 3.5 billion years old. How did these cyanobacteria help to change Earth’s early atmosphere to allow for the evolution of aerobic organisms?
A. Cyanobacteria added oxygen to Earth’s atmosphere through the process of photosynthesis.
B. Cyanobacteria added carbon dioxide to Earth’s atmosphere through the process of cellular respiration.
C. Cyanobacteria added methane to Earth’s atmosphere through the process of chemosynthesis.
D. Cyanobacteria added hydrogen to Earth’s atmosphere through the process of nuclear fission.

Answers

Answer:

The answer is A.

Explanation:

Because they evolved to release oxygen through photosynthesis.

Through the process of photosynthesis, cyanobacteria added oxygen to the Earth's atmosphere. The correct option is A.

What is cyanobacteria?

Cyanobacteria are aquatic and photosynthetic, which implies they live in water and can make food. Since they are bacteria, they are tiny and usually unicellular, though they frequently grow in visible colonies.

Photosynthesis is the process by which cyanobacteria add oxygen to the Earth's atmosphere.

Thus, the correct option is A.

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The type of muscle fibers that are the largest, contain the most myofibrils and can generate the most powerful contractions are the:

Answers

Explanation:

fast glycolytic type (IIb) fibers

When individuals migrate, alleles can be transfered from one population to another population. This commonly referred to as

Answers

Answer:

Gene flow.

Explanation:

When individuals migrate, alleles can be transferred from one population to another population which is known as gene flow. Gene flow is also called gene migration, the introduction of genetic material through interbreeding from one population of organisms to another which changes the composition of the gene pool of the migrated population of organisms. This gene flow creates a new species that is different from previous population of organisms

Which of the following is NOT part of the circulatory system?
lungs
heart
arteries
blood​

Answers

I’m not 100% sure about this one but I believe that it is lungs, seeing that the rest is blood you can just like pick the most obvious one out

Assuming a normal individual weighs 110 pounds. What is the amount of water needed daily to remain hydrated according to the lecture?

A) 25 ounces
B) 35 ounces
C) 45 ounces
D) 55 ounces

Answers

Answer:

D

Explanation:

The intake of someone of the that weight should be 73 ounces you haven't given me any form of formula so I went with the highest.

A student collects some of the solution from the phloem in the stem of a plant. Which of the following would be present in the liquid?

A) Glucose

B) Starch

C) Amino Acids

D) Cellulose

HELP!!!

Answers

Answer:

D

Explanation:

The answer to this question is d

The lodgepole pine has two kinds of cones that have seeds. What do they do for the lodgepole tree population?

Answers

Answer:

Seeds from cones on the forest floor may provide a viable seed bank for lodgepole pine regeneration following forest destruction by mountain pine beetles.

Explanation:

They do for the lodgepole tree population Seeds from cones on the forest floor may provide a viable seed bank for lodgepole pine regeneration following forest destruction by mountain pine beetles.

What is a possible limiting factor of that lodgepole pine?

The mountain pine beetle is the limiting factor to the population of lodgepole pines in Colorado. It devastated large numbers of trees in the state and in the northern mountains of the United States.  

Thus, lodgepole pine regeneration follows forest destruction by mountain pine beetles.

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pls help I don’t understand this yet since I wasn’t able to understand during school year

Answers

Answer:

D.

Explanation:

recessive is lower case and the other word that starts with "H" means same

An open circuit means that

Answers

Answer:

An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. ... An open switch is one without continuity: current cannot flow through it. A closed switch is one that provides a direct (low resistance) path for current to flow through.

Explanation:

I hope this helps you!

Francis was recording plant heights for an experiment. Each time that she took a measurement, she wrote it down. Then,
she measured the plant again and compared the new measurement to the one that she had recorded in her notebook.
What was she most likely trying to do?
revise her hypothesis
check her memory
O make the data more valid
O form a conclusion

Answers

Francis was most likely trying to make the data more valid.

Answer:

c    make the data more valid

Explanation:

The two parts of cellular respiration which must occur twice for each glucose molecule that enters the process are

Answers

Answer:

the citric acid cycle and preparatory steps

What are the two function of sweat

Answers

Answer:

Its main function is to control body temperature. As the water in the sweat evaporates, the surface of the skin cools. An additional function of sweat is to help with gripping, by slightly moistening the palms.

Explanation:

Glucose can be stored as glycogen in the liver and muscles. blood and lymph. liver and kidneys. heart and kidneys .

Answers

The Answer is
-Liver and muscles

¿Es normal el efecto invernadero?

Answers

Answer:

i think it is

Explanation:

its because greenhouse effect is a natural process which warms the Earth's surface. When the Sun's energy reaches the Earth's atmosphere, some of it is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases.

Question 17 of 30
15 ~ 94%
Complete the following sentence. Iron usually forms only an _____
magnet that loses its
magnetism when moved away from a magnetic source. What one word completes the sentence?
Enter your answer

Answers

Answer:

Iron usually forms an

Induced magnet

Answer:

Temporary or Induced Magnets.

Explanation:

Temporary magnets: These magnets are made of soft iron that has temporary magnetic properties. These magnets behave as permanent magnets when introduced to a magnetic field but lose magnetism when moved away from the magnetic source.Temporary magnets are usually used in radio, electric motors, phones.They are extensively used as electromagnets to produce electricity. The demagnetizing property of electromagnets by altering the intensity of electric current helps in a lot of practical applications based on controlled situations.

For more information:

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Which of the following are stages in the life cycle of a mosquito?

tap the photo ​

Answers

Answer:

the answer is D. I, II, III

Explanation:

The mosguito goes through all 3 stages the egg, pupa, and larva


Question 10 of 10
Which organisms convert nitrogen gas into a form that is usable by plants?
A. Fungi
B. Algae
C. Bacteria
D. Animals

Answers

Answer:

bacteria

Explanation:

Nitrogen gas (N2) diffuses into the soil from the atmosphere, and species of bacteria convert this nitrogen to ammonium ions (NH4+), which can be used by plants. Legumes (such as clover and lupins) are often grown by farmers because they have nodules on their roots that contain nitrogen-fixing bacteria.

describe a tulip flower based on its physical characteristics

Answers

Answer:

D)The tulip plant is categorized as a monocot. The statement that best describes the flower based on its physical characteristics is "The tulip plant is categorized as a monocot." Monocots are plants the bears' flowers whose seeds regularly contain just a single embryonic leaf or cotyledon.

Explanation:

During intense exercise, the muscle cells require constant supply of ATPs but the supply of oxygen is low. In that case - the muscle cells of the person will switch from which to which pathway?

Answers

Answer:

Aerobic to lactic acid fermentation pathway

Explanation:

ATP, which is the usable form of energy in living cells, is obtained via a process called RESPIRATION. However, aerobic respiration requires a constant supply of oxygen to occur. Hence, during an intense exercise where the supply of oxygen is low, the muscle cell has to switch from the respiration pathway that requires oxygen to one that doesn't.

Fermentation is a kind of cellular respiration that does not require oxygen to occur. In the muscle cells of animals (humans inclusive), lactic acid is the product of the fermentation process, hence, it is called LACTIC ACID FERMENTATION. This means that the muscle cells, in a low supply of oxygen, will switch from AEROBIC to LACTIC ACID fermentation pathway.

is an avocado a fruit?

Answers

Yes indeed it is, I actually didn’t know that tho

The function of thick mucus in the stomach is to Group of answer choices promote fat digestion. activate stomach enzymes. protect stomach cells from acid and enzymes. keep the stomach bacteria-free.

Answers

Answer:

protect stomach cells from acid and enzymes.

Explanation:

This prevents peptic ulcers.

Name the type of classifications of tissue formed by combination of cell.

a) Red Blood Cell:
b) Muscle Cell:
c) Nerve Cell:​

Answers

Answer:

its (a)

Explanation:

A tissue is a group of red blood cells of common origin which are structurally similar and perform a particular function. Organ is a group of tissues and organ system is a group of organs.Therefore, the correct answer is option A.

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