A - Salinity because salinity is how much salt is in water and adding more would increase the salinity.
Answer D because humans can effect the way of life in an ecosystem and things like climate can effect them too
Answer:
C
Explanation:
Becuase fom a vaccine you are recieving antibodies by another animal or human donor.
D is unlinkely since it describes how the mother is nursing the baby, so nothing directly mentioning of the baby recieving any antibodies. The other options also talk about how the body creates its own antibodies, which isn't passive immunity.
Without using the scientific method, it would be much harder to determine a factor that could cause your experiment to fail. By sticking to only one of the methods you could easily destroy your experiment without the background search needed or the materials planned out.
<span>The awnser is adaptive radiation</span>
