Answer:
Change in food source.
Explanation:
If there is a change in food source, then the organism will have to adapt to that change. For example, with Darwin's Theory on the finches on the Galapagos Islands. There were many different varieties from different size to different beaks. This was because of changes on food sources and they adapted to obtain them more.
Well it’s including sweat and for sweat to get sticky it has to be high heat so I’m going with
C
<span> In order for the living of the species, when they reproduce, they do so in the millions so that a some of the progeny will be bound to survive.</span>