In what instances might punctuated equilibrium occur? a) when the environment is unusually humid b) when the environment is rapidly changing c) when the environment is generally stable d) when the environment experiences gradual change overlong periods of time

How are the cell walls of a plant and fungus different ?

Which of the following are causes of coastal erosion? check all that apply. beach grasses and other plants trap windblown sand. wave action carves away the coastline. groundwater under pressure is forced to earth’s surface. artificial structures stop the natural flow of sand along the coast. underground caves collapse as bedrock is dissolved.

What is the primary goal of human communities?