Biodiversity encompasses the variety of life on Earth at all levels, from genes to species to ecosystems.

Pollution is a major threat to ecosystem health, but it is not a key component of a healthy ecosystem.

Biodiversity provides a buffer against environmental changes by ensuring that there are multiple species with different traits that can adapt to changing conditions.

Habitat destruction is the leading cause of biodiversity loss, as it removes the homes and resources that species need to survive.

Invasive species are non-native species that have been introduced to an ecosystem by human activities and have the potential to cause harm to native species and ecosystems.

Air pollution is a major environmental problem, but it is not a benefit of biodiversity.

Succession is the process by which ecosystems naturally recover from disturbances, such as fires, floods, or droughts.

Air pollution is not a key ecosystem service provided by forests.

Restoration is the process of restoring degraded ecosystems to their natural state.

Pollution reduction is not a key strategy for conserving biodiversity, although it is important for ecosystem health.

Sustainable resource use is the process by which humans manage natural resources in a way that meets the needs of the present without compromising the ability of future generations to meet their own needs.

Overpopulation is not a key challenge to biodiversity conservation, although it is a major environmental issue.

Sustainable resource use is the process by which humans reduce their impact on the environment by using resources in a way that meets the needs of the present without compromising the ability of future generations to meet their own needs.

Reducing pollution is not a key goal of biodiversity conservation, although it is important for ecosystem health.

Conservation is the process by which humans work to protect and restore ecosystems.