The rungs of DNA are made up of nitrogenous bases: adenine, thymine, guanine and cytosine. Adenine pairs with thymine, and cytosine pairs with guanine.
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Answer from: Quest
It's either -limiting factors or -scarce resources but i'd go with my first answer since the food and water are abundant they really aren't scarce
Answer from: Quest
No you are not wrong
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