Imagine you are a scientist working at Yellowstone national park. Your job is to calculate how many animals
are living within the park each season.
1. Why might the deer population decrease in number
from one year to the next?
2. Why might the deer population increase in number
from one year to the next?

1. The deer population might decrease one year because of the increase of numbers in the deers predators such as wolves or because of too many deer that that area doesn’t have enough supplements such as food

2. The deer population could increase because of the decrease in its predators like wolves dying or finding another reliable food source