Answer:
Cellulose
Explanation:
Cell walls made of cellulose are only found around plant cells and a few other organisms. Cellulose is a specialized sugar that is classified as a structural carbohydrate and not used for energy. ... While cell walls protect the cells, they also allow plants to grow to great heights. You have a skeleton to hold you up.
D. It's harder body parts. A lot of fossils are of the skull, therefore that would lead one to think that it would be harder<span />
Answer:
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Explanation:
is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.
Answer:
Central canal
Explanation:
running through the osteon
central canal or haversian canal,contains blood vessels,nerves and lymphatic vessels.