In a living organism, what is an organ?
functional unit, or building block, of all organisms; smallest unit that can carry on the activities of life
the shell or skin of an organism
a structure composed of a number of tissues that work together to perform a specific task
a group of similar cells that perform a common function

How was the climate when the ambulocetus was alive

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.

How do plants obtain more sunlight a.) they lean towards the light b.)they grow straight up c.) they only live in sunny areas, like the tropics d.) they stay low to the ground