How do models ecologists understand global systems?

What best explains the inability for life to exist in earth early atmosphere

In the ocean why are the greatest amount of primary producers found in the epipelagic zone and how does that affect biodiversity

Fruit bats in central america eat bananas and other fruits. banana plants rely on bats for pollination. what would be the most likely consequence on the banana crop if fruit bats were eliminated from the area? the banana crop would increase because bats would stop eating the crops. the banana crop would decrease because bats would no longer pollinate the crops. the banana crop would remain constant because bees would replace the bats. the banana crop would remain constant because the plants would adapt using asexual reproduction.