Which scientists have contributed to our knowledge of earth's age?

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.

Which of the following is required of a new drug?me

Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain