Biodiversity

The major cause of extinction is habitat fragmentation.

• True

• False

Species that could become endangered in the near future are called extinct species.

• True

• False

The Threatened Species Act prohibits trade or products made from threatened or endangered species.

• True

• False

Protecting whole ecosystems is the most effective way to preserve biodiversity.

• True

• False

Biodiversity had both ____________________ and ecological value within a system.

• Mental

• Economic

• Physical

The sea otter is a _____________ that influences the survival of many other species in its ecosystem.

• Gene

• Endangered Species

• Keystone Species

Climate, area, and _________________ affect biodiversity in an ecosystem.

• Weather

• Niche Diversity

• Genetic Diversity

• Extinction

_________________ are the most diverse ecosystems in the world.

• Tropical Rain Forests

• Deserts

• Oceans

• Ponds

______________ are the second most diverse ecosystems in the world.

• Oceans

• Tropical Rain Forests

• Deserts

• Coral Reefs

Scientists think people have directly caused the extinction of some species through habitat destruction, _________________, or other actions.

• Fires

• Floods

• Hunting

• Fishing