Answer:
Natural selection is when an animal adapts to their environment to survive and produces more offspring. It occurs when the animal isn’t thriving in their environment and they make adaptions to where they can survive.
Explanation:
An example of natural selection is, a bird used to have a really thick and short beak. But to have more access to food they adapted to their environment and now have a long and skinny beak.
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Epithelial tissue will most likely be found lining organs where substances have to easily diffuse across, such as the intestines and the lungs.
<h3>What are tissues?</h3>
Tissues may be defined as the group of similar cells that combine together to form similar functions. Four main types of tissues are epithelial tissue, connective tissue, muscle tissue and nervous tissue.
Epithelial tissue are presents on the surface, body lining and lining of mouth and internal organs.
The cells of epithelial tissue are one layer thick only. This means epithelial tissue that have the function of absorption are usually thick and has a large surface area that increases the rate of absorption.
Thus, Epithelial tissue is the answer.
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As blood enters the artery, the walls of these vessels expand and contract, which can be felt as the pulse where the arteries run close to the body surface.
It is common to detect the pulse with a few fingers placed on the radial artery on the wrist, or the carotid artery in the neck.
Because the walls of the arteries pulse whenever the left ventricle contracts, the pulse rate generally indicates the cardiac function, which is normally between 50 and 85 in a healthy adult.
Pulse is usually defined as the rhythmic dilation of the arteries due to flow of the blood caused by heart contractions. The measurement of the pulse rate can be used for the diagnosis of serious disease such as cardiac disease.
Answer:
Supported repeatedly as new discoveries have been made.
Explanation:
