A. Carbon
Explanation:
because during photosynthesis, the cells use carbon dioxide and the light from the sun and that makes sugar molecules.
Answer:
Are you referring to symbiotic relationships between organism? If so, the answer would be parasitism.
One organism, a parasite, takes advantage of another organism at the expense of the host organism.
Ex. A tick bites a dog for blood to use as food. The dog gets an uncomfortable bug bite and the dog might catch a tick borne disease.
The answer is D
The nitrogen bases adenine, thymine, cytosine and guanine code for the amino acid sequence in the protein
One redo our could be a body of water like a dam as such, and another is something like a retention pond, taking in water
