Veina cause veins grow in you heart
The answer would be the first option or oxygen energy system.
Answer:
Heat energy
Explanation:
When friction acts between two surfaces that are moving over each other, some kinetic energy is transformed into heat energy.
ANSWER:
The correct answer would be "to withstand the pressure of the blood that is being pumped by the heart".
Arteries are the type of blood vessels which carry blood away from the heart to rest of the body.
Thus, the blood which enters the arteries usually has high pressure due to the pumping of the heart.
To withstand and absorb this pressure, arteries usually have thick layers of muscular and elastic fibers in their structure as compared to the veins.
The wall of the arteries swells and expand due to the force generated with each contraction of the heart and then the arteries contract back which helps in pushing the blood forward.
Answer:
Coal, natural gas, and petroleum are all fossil fuels that formed under similar conditions. Today, petroleum is found in vast underground reservoirs where ancient seas were located. Petroleum reservoirs can be found beneath land or the ocean floor. Their crude oil is extracted with giant drilling machines.
Explanation:
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