Environmental science includes the study of all of the following except: <u>a. planets</u>.
Explanation:
Environmental sciences are the study of the patterns and processes of the world and how they are modified by humans. Environmental science includes the study of living organisms, soil, water, and atmosphere.
Astronomy is the science that studies what it is outside the atmosphere, and it includes planets, stars, and galaxies.
blood is punped our of the heart very fast which means it would need a blood vessel witch thick walls to withstand the pressure. thin walls would cause the blood vessle damage and may evwn break as it wouldn't be able to withstans the pressure.