So abiotic means nonliving, so the only abiotic option is B. the gravel on the bottom of the aquarium.
Answer:
Autorophs are living organisms that make their food through photosynthesis while heterotrophs are living organisms that can not make their own food, so they must eat it.
Explanation:
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The areola is the most common initial site to visualize peau d'orange skin.
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The reactants of photosynthesis are water, light, and carbon dioxide. The products are oxygen and sugars. Photosynthesis is the process<span> by which plants, algae, and some bacteria use sunlight, carbon dioxide and water to to produce carbohydrates and oxygen. </span>
I think it’s B) robins in North America
