i think it's the independent variable
If the resting pulse of an adult is at 20 bpm it means that they are an active person so their heart doesn’t need to pump/beat as much as a normal adult.
The name of the structure that increases the surface area of the small intestine in humans is Villi.
<h3>What are the functions of the small intestine?</h3>
The small intestine performs a key role in the digestion of undigested food which comes through the stomach. It also absorbs all the essential minerals and nutrients from the food and is used by the body.
Villi or microvilli is the structure that increases the surface area of the small intestine for food absorption and adding digestive secretions.
Therefore, the name of the structure that increases the surface area of the small intestine in humans is Villi.
To learn more about the Small intestine, refer to the link:
brainly.com/question/17315460
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Answer:
Global warming is a term which deals with increasing in the temperature of the earth due to the effect of various green house gases like(methane,carbon dioxide,carbon mono oxide
Explanation:
it destroy the depletion of ozone layer .As a result sun rays directly fall on earth which warm the earth rapidly(increasing temperature).
