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Chapter 3 Science
Lesson 5 Biodiversity
Question | Answer |
---|---|
Biodiversity | The total number of different species on Earth, including those on land, in the water, and in the air |
Keystone Species | A species that influences the survival of many other species in an ecosystem |
Gene | A sequence of DNA that determines a trait and is passed from parent to offspring |
Extinction | The disappearance of all members of a species from Earth |
Endangered Species | A species in danger of becoming extinct in the near future |
Threatened Species | A species that could become endangered in the near future |
Habitat Destruction | the loss of a natural habitat |
Habitat Fragmentation | The breaking of a habitat into smaller, isolated pieces |
Poaching | Illegal killing or removal of wildlife from their habitats |
Captive Breeding | The mating of animals in zoos or wildlife preserves |