I believe its C because it seems the most reasonable.
Its the experiment part where you test the hypothesis
<span>After a long time, a mature community is established and this community does not change unless it is disturbed.</span>
Answer:
It helps insure the survival of a species in a whole.
Explanation:
Allows different species, for example dolphins or meerkats, to mate and ensure survival in their habitats.
Answer:
E) Hydrogen peroxide
Explanation:
Hydrogen peroxide is the substance that has a brown color and is detected by the spectrophotometer in our reaction.