Which organism has the more efficient heart?
A: a frog
B: a robin
C: an alligator
D: a tuna​

Answers

Answer 1
B. Robin

Mammals and birds have the most efficient hearts
Answer 2

Answer:

I think its a alligator or a frog I'm not rlly sure but I think it might be a alligator


Related Questions

What are the genes that start cell division called?

Answers

The genes that start cell division are called Proto-oncogenes

How does the number of cell layers play a role in the function of an epithelial tissue?

Answers

Answer:

Epithelial tissues are widespread throughout the body. They form the covering of all body surfaces, line body cavities and hollow organs, and are the major tissue in glands. They perform a variety of functions that include protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception.

Select the correct answer. a patient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused these symptoms? a. vitamin a b. vitamin b6 c. vitamin b12 d. vitamin c e. vitamin e

Answers

A patient has a history of poor nutrition. he has skin rashes, bleeding gums, and a cut that hasn’t healed in a long time. what vitamin deficiency most likely caused these symptoms vitamin c.

Which disease is caused by vitamin B6?

Vitamin B6 deficiency causes peripheral neuropathy and a pellagra-like syndrome, with seborrheic dermatitis, glossitis, and cheilosis, and, in adults, can cause depression, confusion, electroencephalogram abnormalities, and seizures.

Thus, the correct option is "D".

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Answer:

D. Vitamin C

Explanation:

PLATO

In which location would you expect to find the greatest species diversity?

Answers

Answer:
Tropical ecosystems.

Explanation:
Species richness is greatest in tropical ecosystems. Tropical rain forests on land and coral reefs in marine systems are among the most biologically diverse ecosystems on Earth and have become the focus of popular attention.

What is the role of guard cells in photosynthesis?.

Answers

Answer: To use Osmotic pressure to open and close Stomata, allowing plants to regulate the amount of water and Solutes within them.

Explanation:hope this helps :3 have a nice day xlXCherryColaXlx...(pls mark Me brainliest)

Explain why scientists have classified protists in one kingdom when they are such a diverse group.​

Answers

Explain why scientists have classified protist in one kingdom when they are such a diverse group? This kingdom is necessary for the classification of all organisms that don't fit into the other kingdom categories.

Which of these materials are organic? (Select all that apply.)
A. rock
B. leaf
C. clay
D. bacteria
(PICK MORE THAN ONE) also no links or troll answers

Answers

Answer: All: A, B, C, D

Explanation:

      All of these materials are organic. This means they can be found naturally occurring in our world, Earth. This means you should select all of them.

✓ A. rock

✓ B. leaf

✓ C. clay

✓ D. bacteria

Grasses are the dominant producers in the prairie ecosystem. Mice eat the grass seeds, snakes eat the mice,
and hawks eat the snakes.
The mass of a hawk is around 500 grams.
In this ecosystem, how many hawks can be supported by 250,000 kilograms of producers?
Recall that 1 kilogram is equivalent to 1,000 grams.

Answers

Answer:

500,000 hawks

Explanation:

250,000kg=250,000,00grams

250,000,000/500=500,000hawks

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The pulmonary circulation conveys blood that is ______ in oxygen to the lungs before returning back to the ______ side of the heart.

Answers

The pulmonary circulation conveys blood that is low in oxygen to the lungs before returning back to the left side of the heart.

The pulmonary circulation

The circulatory system is divided into two main parts namely:

pulmonary circulation and

systemic circulation.

The pulmonary circulation involves the movement of blood between the lungs and the heart.

Blood from the systemic circulation returns to the right side of the heart where it is pumped through the pulmonary artery into the lungs to be oxygenated.

After oxygenation has taken place in the lungs, the blood returns to the left side of the heart through the pulmonary veins.

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Examine the model for two cellular organelles found in many eukaryotic cells. Which molecule(s) could be represented by the circle labeled Z that is produced as an output of the mitochondria and required by the chloroplast? Select ALL that apply.
A)Letter Z could be carbon dioxide because it is produced in cellular respiration and is a reactant of photosynthesis.
B)Letter Z could be a water molecule because it is produced in cellular respiration and is a reactant of photosynthesis.
C)Letter Z could be a water molecule because it is produced in photosynthesis and is a reactant of cellular respiration.
D)Letter Z could be a glucose molecule because it is produced in photosynthesis and is a reactant of cellular respiration.E)Letter Z could be an oxygen molecule because it is produced in cellular respiration and is a reactant of photosynthesis.

Answers

Answer:

A)Letter Z could be carbon dioxide because it is produced in cellular respiration and is a reactant of photosynthesis.

B)Letter Z could be a water molecule because it is produced in cellular respiration and is a reactant of photosynthesis.

How does the diagram depicting the evolution of the eohippus into the modern day horse include
transitional forms?

Answers

The diagram depicted the evolution of the eohippus into the modern day horse through the presence of hooves etc.

What is Transitional  fossil?

This is defined as the fossil which exhibits the characteristics of both ancestral and derived forms.

In the evolution of the eohippus into the modern day horse, the transitional forms include :

Presence of hooves.Presence of muzzle etc.

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Creatinine has a renal clearance of 140 ml/min. Why is this?.

Answers

Answer:

It is secreted by the renal tubules

Explanation:

What are the three distinct characteristics of fish?

Answers

Answer:

All fish are cold-blooded, which is also called ectothermic.

Water Habitat. Another shared characteristic amongst all fish is that they live in water.

Gills to Breathe.

Swim Bladders. .

Explanation:

What do smooth muscle cells look like under a microscope? A.small,striated,and 1-2 nuclei per cell. B.long and thin with striations and multiple nuclei. C.smooth ,1 nuclei,and connected by gap junctions.

Answers

Answer:

your answer would be C

C.smooth ,1 nuclei,and connected by gap junctions.

Explanation:

This is because, the other options include it having striations, and it does not have that.

Hope it helps :)

Pls mark brianliest <3

`

`

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Tori

Smooth muscle cells look like smooth, single nucleate, and connected by gap junctions under the microscope. Thus, the correct option is C.

What are Smooth muscle cells?

Smooth muscle cells are also called as involuntary muscle cells. These muscle shows no cross stripes under microscopic magnification. Muscle cells are made up of narrow spindle-shaped cells with a single, centrally located nucleus. Smooth muscle tissue, unlike the striated muscle, contracts slowly and automatically in the body.

At a cellular level, smooth muscle cells can be described as an involuntary, non-striated muscle cell. Smooth muscle cells consist of alternate thick and thin filaments which are not arranged into sarcomeres however it gives a non-striated pattern. On further microscopic examination, it appears homogenous.

Therefore, the correct option is C.

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For this testable question write a proper hypothesis and identify the variables.

A truck driver wants to find out if there is any relationship between the amount of gas he uses per kilometer and the speed that he's going.

Answers

Hypothesis - there will be a relationship between the amount of gas per kilometer and the speed the man is going. This is because , more speed requires more gas / power.
The variables are - the amount
Of gas , and the speed in which he is going

After you set up a fish tank, you are sure to see algae growing in it. There is plenty of light, fertilizer in the form of fish droppings, and plants or glass for algae to cling to. You may see green strings of algae in the water or green spots growing on the glass. Your whole aquarium can turn green if you don’t stop the algae. To prevent the problem, you can add algae-eating fish or microorganisms to the water. Covering the aquarium for a few days will also kill algae, which need photosynthesis to survive.

Multi-celled algae grow into larger organisms through cell division. For one-celled algae, the purpose of cell division is
.

Answers

Answer:

tissue growth and maintenance

Explanation:

In ivan pavlov’s classic experiments, what type of stimulus was the bell?.

Answers

Answer:

because he was good

Explanation:god gave him powerful

questions in the attached img. someone help me pls​

Answers

Answer:

A. Medicine — Plasmids are used as an anti-stress medicine to cope with stress-related conditions. It is also used replicate proteins. It is also used in gene therapy.

B. Agriculture — It is used for metal resistances. It is also used for antibiotic resistances. It provide bacteria with genetic advantages.

Please Help! Due in 5 minutes!

Which of the following areas would be the most suitable for species to survive a mass extinction event?
A. the continent of Asia
B. the country of Spain
C. the state of Florida
D. the Bay of Islands

Answers

Birds: Birds are the only dinosaurs to survive the mass extinction event 65 million years ago. Frogs & Salamanders: These seemingly delicate amphibians survived the extinction that wiped out larger animals. Lizards: These reptiles, distant relatives of dinosaurs, survived the extinction.

Answer:

It might be...B or C? I'm not sure.

Explanation:

If I had to guess I would pick...C but That's up to you!

I hope that helped in some kinda way!

Rex

The vegetative body parts of a higher plant is made up of-----------,------------and----------.​

Answers

Explanation:

The vegetative pats of a higher plant is made up of ROOTS,STEM and LEAVES.

how do vaccines stop the spread of a virus

Answers

Vaccines do not always prevent the spread of a virus. Vaccines help your body fight off viruses and protect your organs, among other things. Vaccines help protect you and others by killing the virus faster but do not necessarily prevent it from spreading. Staying at home and thoroughly cleaning your home is the only way to prevent a virus from spreading.

1.what causes muscle fatigue after avery hard physical exercise ?​

Answers

During a very hard physical exercise lactic acid will be alocated, that causes muscle fatigue.

problems young south African face​

Answers

Answer:

The youth in South Africa face challenges such as crime, unemployment, poverty, and most importantly unequal opportunities in education. These challenges should not be present in the daily lives of South African youth, especially since it has been over two decades since South Africa's first democratic elections.

Explanation:

no Explanation

Answer:

crime, unemployment, poverty, and most importantly unequal opportunities in education.

Explanation:

10 A solution of sugarcone was, boiled with hydrochloric acid Sodium carbonate was heated with a Benedict solution An orange precipitate was formed .Why' was e solution boiled with hydrochloric acid.​

Answers

Answer:

the answer to the nearest whole thing was that a few times now that I have the same

Which are most responsible for creating acid rain pollution?.

Answers

Power plants release the majority of sulfur dioxide and much of the nitrogen oxides when they burn fossil fuels, such as coal, to produce electricity. In addition, the exhaust from cars, trucks, and buses releases nitrogen oxides and sulfur dioxide into the air. These pollutants cause acid rain.
Power plants release the majority of sulfur dioxide and much of the nitrogen oxides when they burn fossil fuels, such as coal, to produce electricity. In addition, the exhaust from cars, trucks, and buses releases nitrogen oxides and sulfur dioxide into the air. These pollutants cause acid rain.

An enzyme which accelerates a chemical reaction is considered.

Answers

Answer: An enzyme that accelerates a chemical reaction is considered to be a catalyst.

                      Hope this Helps!

Answer:

biological catalysts

Explanation:

Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.

A new microbiology student failed to properly sterilize the pipet between creating E. coli and S. epidermidis cultures from the tablets in the lab kit. How would this mistake be recognized when the mixed culture is streak plated

Answers

With this error, the culture medium can be visualized with two different types of bacteria, with different stains.

In addition to staining in culture medium, what are the differences?

Escherichia coli, or E. coli, is a bacterium that naturally inhabits the intestines of people and some animals, without any signs of illness.

Staphylococcus epidermidis is a Gram positive, coagulase negative bacterium that is part of our normal flora. The microorganism colonizes human skin and mucous membranes, notably moist surfaces such as armpits, nostrils, etc.

With this information, we can conclude that this error, the culture medium can be visualized with two different types of bacteria, with different stains.

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One of the most important forces that led to the expansion of urban areas is the
O airplane
O automobile
O city bus
0 train

Answers

Automobile led to the expansion because it allowed for business to grow.

Answer:

The answer is train. And if not then its automobile.

Explanation:

Trains have been the first thing for transportation and for the trade company they helped you get place to place and they went a long way.

-Hope this helps!

- Justin :)

Which of the following best explains how a dog is able to ingest and digest food, and remove waste
products from its body?
Choose 1 answer:
A dog carries out digestion and excretion through a series of redundant systems, so if one
system is injured, another will take its place.
A dog has cells whose genetic makeup can change depending on the circumstances, such as
whether the animal is ingesting and digesting food, or excreting waste.
A dog has systems of specialized cells, such as those that make up the urinary tract and
digestive system, that help it carry out these functions.

Answers

Answer:

1st is correct

Explanation:

At its simplest, a dog's digestive system is a long tunnel that runs from their mouth to the anus. Food goes in at the mouth and travels through this tube and at various stages is broken down and either absorbed into the body or excreted as waste at the anus.

Researchers use all of the following to study the impact of heredity on behavior except __________ studies. a. family b. peer c. adoption d. twin

Answers

Answer:peer

Explanation:

Researchers use all of the following to study the impact of heredity on behavior except peer.

Researchers use all of the following to study the impact of heredity on behavior except why?

When looking at studies relating to the heredity of traits we want to see if the child got a trait from the parents and their genes or from the way the child grew up with the parents.

That means that peers are not useful to us in those studies. Family is very useful since we need to look at the family and how it raises a child. Adoption is useful to see if an adopted child has the same traits as a biological child.

And twins are useful if they grew up in different circumstances from one another.

Thus, option "C" is correct.

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