AP BIOLOGY

Detailed explanation-1: -Extinction is the death of all members of a species of plants, animals, or other organisms. One of the most dramatic examples of a modern extinction is the passenger pigeon.

Detailed explanation-2: -A species is said to be extinct when it no longer lives anywhere on the planet. Extinction occurs when the last members of a species die because they cannot acquire the food, water, shelter, and/or space necessary to survive.

Detailed explanation-3: -There are two main types of extinction: Mass extinction and background extinction. Mass extinction has only occurred five times in history. These are short and sudden phenomena caused by unnatural catastrophes such as asteroid impacts or volcanic eruptions. Over 50% of all species are wiped out at once.

Detailed explanation-4: -The extinction of any species is an irreversible loss of part of the biological richness of the Earth. Extinction can be a natural occurrence caused by an unpredictable catastrophe, chronic environmental stress, or ecological interactions such as competition, disease, or predation.