Coral reefs are at risk due to... (choose all that are correct) physical damage from careless divers and boats

Overfishing of herbivorous fish

Increased nutrient runoff from land

Rising sea temperatures

pollution

dropping pH of the ocean

Overgrowth of algae

Rising sea levels

extreme weather

increased sediment load from land and sea

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.

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.