How does the b horizon receive materials from the layer above?

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.

When lactate builds up in a runners muscles it causes a burning sensation what causes this to occur

When do scientists consider a hypothesis valid? a. when the hypothesis is testable b. when the hypothesis is published in a scientific journal c. when more than one person supports the hypothesis d. when experimentation shows it to be true