Answer:
The nervous system and the endocrine system are both necessary to maintain homeostasis and keep the human body alive.
Organisms who happen to be best suited to an environment and reproduce most successfully will be consider successful in terms of natural selection.
2 with D and 1 with E and
Hi! I believe that the lasers are used for measuring the earthquakes movement and how much worse it is going to be with the next earthquake. But they would also measure how much force there was and how much more or less there will be. :) Hope this helps. :)