Answer:
C) a covalent bond between oxygen and hydrogen
Explanation:
Carbon is a macronutrient and is present in every part of the body. Carbon dioxide in blood plays an important role in the body as it helps in maintaining the pH of blood. Carbon is an essential element which has a lot of benefits for both industrial purposes and as the basic building block of the human body, without which, life is incomplete
Explanation:
a) movement of molecules from an area of high concentration to low concentration
They explore around the bayous when they are frogs
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