(1) Why does your body need to make so many different types of antibodies ? (2) How are antibodies and enzymes similar?

(3) What makes type A blood different from type b blood ?

(4) Why would type A blood clump up "agglutinate" when it is but with type A antigens?

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What kind of seafood would you expect to have the highest levels of mercury and why? kelp, because they use the sun to photosynthesize on the bottom trophic level. oysters, because they filter feed on plankton on a lower trophic level. small fish, because they eat plankton on a higher trophic level. sharks, because they feed on organisms on a higher trophic level.

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