Answer:
I am pretty sure it is B, weathering and erosion. Hope this helps!
<span>There is a herbicide poison spill and all the grass is killed. It will make all of the consumers who depends on the gras will get decreased. If they saw some consumers dies by eating the grasses affected by herbicide posion, they will move far away from it</span>
The advantage of natural breeding are the following:
1. cattle produce may eradicated hereditary sickness.
2. the cattle that is produce is fitter, stronger and can survive through harsh condition because they are use to it.
3. they can produce better food