The developing fetus receives nutrient rich blood through the

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.

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

Why do oceanic plates tend to subduction when colliding with a continental plate