An event during which many types of living things suddenly die out is called a(n)

mass extinction

Explanation:

This is a mass extinction, where a significant amount of organisms are wiped out as opposed to an extinction, where only one species becomes extinct.

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .

the answer is "a.) well–developed vascular system."

explanation: