How many chromosomes will this daughter cell have?

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.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Why do we perceive objects as retaining their brightness under different lighting levels?