Which change would create a new ecosystem? an introduced species

a dam flooding a valley

a lake freezing over

a yearly migration

19. scientists use meteorites that hit earth to provide evidence of the composition of earth's interior because they hypothesize that

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

Iwill mark brainliest and all that sha-bang. what is the function of the endocrine system? a. control longer term response in the body. b. transmit messages throughout the body. c. remove waste from the body. d. all of the above