AP BIOLOGY

Detailed explanation-1: -There are three primary anthropogenic processes that lead to species endangerment and extinction-overharvesting; the introduction of nonnative species, including the spread of disease; and habitat destruction. For most endangered species in the United States today, the most serious threat is habitat destruction.

Detailed explanation-2: -Humans also cause other species to become extinct by hunting, overharvesting, introducing invasive species to the wild, polluting, and changing wetlands and forests to croplands and urban areas. Even the rapid growth of the human population is causing extinction by ruining natural habitats.

Detailed explanation-3: -The main argument supporting de-extinction initiatives is the responsibility of humans to alleviate the damage done to ecosystems. In this light, de-extinction is just a correction of a previous human intervention with negative effects.

Detailed explanation-4: -Extinction occurs when species are diminished because of environmental forces such as habitat fragmentation, climate change, natural disaster, overexploitation by humans, and pollution, or because of evolutionary changes in their members (genetic inbreeding, poor reproduction, decline in population numbers).