What is true of the most recent ice age? O A. It made the dinosaurs extinct.
OB. The continents were much closer together than they are now.
O c. It occurred during the Mesozoic era.
O D. Sea levels were 300 feet lower than they are now.

primary succession begins with a bare rock and ends with a forest secondary succession begins after a natural disaster where there is a temporary setback after a forest fire or local destruction, but the surrounding area can fill in

answer; both surfaces of the membrane are nonpermeable

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added