Lesson 6 Flashcards
What is biodiversity?
The number of different species in an area.
What is a keystone species?
A species that influences the survival of many other species in an ecosystem.
What are genes?
they are located within cells and carry the hereditary information that determines an organisms traits.
What is extinction?
The disappearance of all members of a species from Earth.
What are endangered species?
Species in danger of becoming extinct in the near future.
What are threatened species?
They are species that are in danger of becoming endangered in the near future.
What is habitat destruction?
The loss of a natural habitat. (also the main reason for extinction)
What is habitat fragmentation?
Breaking larger habitats into smaller, isolated pieces or fragments.
What is poaching?
The illegal killing or removal of wildlife from their habitats.
How can pollution reach animals?
Through the food they eat, the water they drink, and the air they breathe.
What are exotic species?
They are invasive species that can outperform and damage native species.
What is captive breeding?
The mating of animals in zoos or on wildlife preserves.
