In which stage of meiosis has DNA undergone some type of mixing? o before DNA replication
O after DNA replication
O during meiosis
O during meiosis II

The number of living organisms in a particular area is

In the water cycle , when does water undergo a chemical change

Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.