How does embryological evidence support darwin's theory of evolution

Why should the united state be concerned about air pollution in china?

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.

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere