Pow! a firecracker explodes close to you. your mouth drops open in surprise, a movement known as:

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

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.

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.