Classify the structures as homologous or analogous, depending on their structure and function. 1.arms of humans and wings of bats 2.fins of dolphins and flippers penguins 3.legs of humans and limbs of elephants 4.feathers of birds and scales of reptiles they must go into these two categories a) homologous b)analogous

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.

What are the doorways into and out of cells, attached to the membrane, and built in the rough er.

The transport tubes for food coming down the plants are called?