Answer:
Ов. H,0
Explanation:
Hydrogen is present in our body about 9.5 percent while oxygen is present in large amount about 65 percent of the total human body. Oxygen mostly present with hydrogen in the form of water. About 70 percent of our body is composed of water. Water is present in every cell. Some oxygen is also present in gaseous form in the cell. This oxygen comes in the body through breathing.
Sunlight, because it provides a source of energy.
<span>The answer is: Strata</span>
Answer:
Nucleic acids
Explanation:
Nucleic acids, macromolecules made out of units called nucleotides, come in two naturally occurring varieties: deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
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<span>The correct answer is 'secondary consumer’. This is because the yellowfin tuna eats herbivorous fish (these are primary consumers - they only eat plants, which are producers) and take refuge from predators. This shows they are not tertiary consumers, as tertiary consumers are at the top of the food chain.</span>