The frontlobe is behind the frontal lobe and is separated from it by the central sulcus.
Answer: the earth was just starting to develop really well and well enough for life.
Explanation: atmospheric oxygen and oceanic calcium levels went up, but nobody needs to know that much facts about how earth developed, But the group called phyla started growing because of these conditions
Yes, all ecosystems need to have a top predator (quaternary consumers) so that the cycle of the food chain can stay complete.
