Kim was reading about the Jurassic period in the Mesozoic era. She was especially interested in the rise of the dinosaurs. How did the second mass extinction and the loss of the dinosaurs affect the remaining populations of mammals that did survive?
A. With less competition, the remaining mammals had to move from their established habitats.
B. With less competition, the remaining mammals had more food, water, and habitats
C. With more competition among the other kinds of populations, the mammals had to struggle to survive.
D. With more competition among the other kinds of populations, the mammals were able to thrive.

B

Explanation:

The answer is B because if the second mass extinction wiped out a good portion of the dinosaurs then there would be less competition for food and resources thus letting the dinosaurs who lived with more resorces such as food, water, and habitats.

it's c. (to reduce the greenhouse effect/carbon gasses)

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.