Some structures, like the leg bones in the modern day whale, no longer have a useful

1 answer:

4 0

Both the pelvis and femur of a whale are called vestigial structures! Another example of this is a human’s tail bone. Hope this helped!

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What are the functions and vessels of the heart, and what are some cardiac disorders that might be life-threatening to a person

zavuch27 [327]

Answer:

The cardiovascular, or circulatory, the system supplies the body with blood. It consists of the heart, arteries, veins, and capillaries. but the things that might be life-threatening to a person or animal are;

Explanation: angina is a type of chest pain that occurs due to decreased blood flow into the heart this can harm animals and people. there is also - - - arrhythmia,which is or an irregular heartbeat or heart rhythm,

- congenital heart disease, in which a problem with heart function or structure is present from birth.

-coronary artery disease, which affects the arteries that feed the heart muscle.

- Heart attack, or a sudden blockage to the heart’s blood flow and oxygen supply this can kill. heart failure, wherein the heart cannot contract or relax normally,

- dilated cardiomyopathy, a type of heart failure, in which the heart gets larger and cannot pump blood efficiently and the last one is

- hypertrophic cardiomyopathy, in which the heart muscle walls thicken and problems with the relaxation of the muscle, blood flow, and electrical instability develop

these are only a few that can harm or even kill a living thing like and animal or person these things are really harmful.

I hope this helps you!!

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2 years ago

What 2 elements is salt made out of

professor190 [17]

Answer:

Sodium and chlorine

Explanation:

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3 years ago

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Select the correct answer.

Aliun [14]

The term is called a theory.

In scientific investigation, a theory is a well substantiated explanation of how a particular phenomenon works based on the set of facts which had been repeatedly confirmed through observations and experiments. A scientific theory gives reliable account of a phenomenon.

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In a gasoline engine, the area in the cylinder head where the air-and-fuel mixture is burned is called the

ser-zykov [4K]

The gasoline engine where the air and fuel mixture is burned is called the combustion chamber. A piston is used to increase and decrease the volume which prepares the fuel to be mixed with air. A spark plug is ignited then to create the combustion thereafter.

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The DNA of a eukaryotic chromosome is:

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Answer:

1. one long double helix.

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The Eukaryotic chromosome consists of the DNA protein structural complex that is formed by a manner and permits the large amounts of the DNA to be stored in the nucleus and structure to form a double standard helix made up of the double nucleic acid molecules and exists as a complementary pair.

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