What happened to Yellowstone National Park when wolves disappeared? A. The bear population increased.
B. The deer population increased.
C. The willow tree population increased.
D. The grassy areas increased.

B. The deer population increased

Explanation:

Wolves would primarily hunt the deer, therefore if there were no wolves around then the deer were able to reproduce without the threat of wolves eating them.

Wolves wouldn't hunt bears because it is increasingly harder for them to kill bears than deer.

The wolves wouldn't really influence the environment because they are mainly carnivores.

Hope this helps!!

- Kay :)

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

i am sorry but i need more information and a picture.