Sagot :
Answer:
Paleontologists
Paleontologists use fossil remains to understand different aspects of extinct and living organisms. Individual fossils may contain information about an organism's life and environment. Much like the rings of a tree, for example, each ring on the surface of an oyster shell denotes one year of its life.
Answer:
c. provide rigidity of the wall
Explanation:
Secondary cell walls contain additional components, such as lignin, which is hard and occupies the interstices between the other components, making the walls rigid and permanent.
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