How can overharvesting of a single species, like beavers, affect an entire ecosystem?

Well if for example there are deer and rabits amd they both ate grass but there were more deer and the rabbits would not be getting enough food their population would decrease. and if they were the prey to fox the fox pop. would also decrease. Hope this was somewhat helpful.

Step-by-step explanation:

the 2nd line can be rewritten as y < x-3

So, any value that is less than both 4x+4 and x-3 will work

Pick any value you want for x, and figure y possibilities

x=0; x-3=-3, 4x+4=4, so y<-3 ... (0,-5) will work

I'm sure you can now come up with other pairs.