Why have improvements in microscopes over time resulted in revisions in the cell theory?

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 most appropriate method of gaining weight (muscle mass)

This is so important ugh its 25 points