Which statement explains the impact of favorable oceanic conditions on the biosphere?

Hurricanes change the shape of the coastline
intertidal areas support many types of life
ocean waves add more sand to beaches
pollution moves onshore from oceans

Intertidal areas support many types of life.

Explanation:

The intertidal areas are the areas between the highest point of the high tide, and the lowest point of the low tide. Because of the constant change occurring in them because of the upcoming or retracting of water, there is lot of nutrition in these places, as well them providing good living conditions for many organisms, especially smaller ones and mid-sized ones.

The general impact on the biosphere is very positive. As in relatively small area the amount of different organisms as well as the numbers in which the species are represented is very high. This results in a very dynamic and thriving habitat.

doctrine that the us had the right to expand throughout north america.