I think it "Death rate" but I am not very sure though.
Dispersion im pretty sure
Changes. :) I think... Whats your question
?
Answer:
No, some energy will be dissipated energy due to work of air resistance.
Answer:
Decrease of snake, coyote, and hawk population. Increase of sagebrush and cacti.
Reasons:
The rats are aten by the snake coyote and hawks so if a food source is taken from them they are going to have to fight more for food. The rats eat the sagebrush and cacti so if they arent getting eaten as much, they have mroe ime to produce.