The answer should be 2. Skin fossilization is rare due to decomposition and scavengers.
<span>And algal bloom occurs
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Producers, because they're the start of the food chain and without them there will be no food chain.
Function. There, the villi and the microvilli increase intestinal absorptive surface area approximately 30-fold and 600-fold, respectively, providing exceptionally efficient absorption ofnutrients in the lumen. There are alsoenzymes (enterocyte digestive enzyme) on the surface for digestion.
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