PLEASE HELP QUICKLY!!

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.

Aflashlight battery is an example of a) potential energy b) kinetic energy c) thermal energy d) solar energy

Number and variety of living organism; includes genetic, species, and ecological types