In what way might the formation of owl pellets increase an owls chances of survival in an ecosystem

The formation of owl pellets increase an owl’s chances of survival in the ecosystem because the owl needs to regurgitate, if they were not able to do so, this will affect them into having their body to cause them to have difficulty in digesting in their intestines, which will cause them to die if it had not taken care of, that is why owl pellets is important as it is much safer for the owls to ingest and feed on.

the answer is b. 0; 4

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.