why is the late Cambrian thought of as the period of the greatest evolutionary change in life forms on earth's history?

Identifying the elements of hypothesis-based science this experiment is an example of hypothesis-based science. what question did the researchers ask? what question did the researchers ask? can predation result in selection for color patterns in guppies? do female guppies prefer to mate with males with bright color patterns or drab colors? do male guppies in pools with pike-cichlid fish have brighter color patterns than females in the pool? do killifish prefer to prey on juvenile guppies or adult guppies?

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Hurry where is the majority of earth's water found? o glaciers o oceans ground o rivers and lakes