What are the levels of organization for living things

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

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 occupation did muhammad have before the first revelation