What are some events in the real world that might cause a significant percentage of a

population or species to be killed or otherwise prevented from reproducing?

There are five major causes of extinction: habitat loss, an introduced species, pollution, population growth, and over-consumption. Through the activity, students will create a list of reasons why animals can become extinct. An endangered species because it is at high risk of becoming extinct while a threatened species is at high risk of becoming endangered.

Explanation:

Before a species becomes extinct, it must first be rare. Some species are naturally rare, while others have that rarity imposed upon them by one or more of the factors discussed above. Some species are much more vulnerable than others to becoming dangerously rare, and other species, when rare, are more likely than others of equal rarity to succumb. These and other factors affecting a species' susceptibility to destruction are discussed in this section.