URGENT PLEASE HELPPP A species of fish has developed the ability to eat smaller fish and algae over time. Some fish with smaller mouths eat the algae, and ones with larger mouths eat other fish. If the algae were to go extinct, how would genetic variation help save the fish species?

Compare the composition of the moon's surface with the composition of the earth's surface.

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

The main ingredient of magma is a pahoehoe. b silca c dissolved gases d obsidian