Have flat bases and are often described as "puffy", "cotton-like" or "fluffy" in appearance.
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67 million years ago in the form of phyollths (small sllica flecks in grass that make it difficult to digest)
Answer:
This Would be B
Explanation:
Oxidation is something that dissolves rock.
Studying cells helps us to construct better medicines and vaccines, which is beneficial to understanding life.