| A | B |
|---|
| Biodiversity increases | As the size of the ecosystem's area increases |
| Different climates | Reason for the difference in biodiversity between a desert and a tropical rain forest |
| Habitat destruction by humans | Is the major cause of extinction |
| Animal behavior | Helps an animal survive |
| Inexhaustible resources | Can easily be replaced like sunlight or wind |
| Nonrenewable resources | Cannot be replaced once they are used |
| Environmental issues | Are solved at personal, local, national, and global levels |
| Global decision | Nations meeting to discuss the ozone layer |
| Personal decision | Student riding a bike to school |
| Local decision | Town meeting about recycling newspaper |
| Poaching | Illegal killing or removal of animals |
| Keystone species | Influences the survival of other species in an ecosystem |
| Reproductive adaption | Brightly colored petals, long care given to young penguins, many offspring of amphibians |
| Hibernation | A state of greatly reduced body activity that occurs during winter |
| Stimulus | Signal that causes an organism to react |
| Habitat preservation | Creating a National Park |
| Establish territory for | Food, safety and finding mates |
| Environmental issues include | Resource use, population growth and pollution |
| Growth of human population | Causes resources to run out |
| Environmental Science | The study of natural processes and how humans effect them |
| Pollution | Exhaust fumes from a car, a negative effect on living things |
| Habitat destruction | Loss of natural habitat |
| Coal and Oil | Example of a nonrenewable resource |
| Adaptions and Behavior | Help animals survive and reproduce |
| Living in a group provides | Protection against predators |
| Biodiversity | Many different species living in an area |
| Extinct | A species that has disappeared from the Earth |
| Genes | Characteristics passed from parents to offspring |
| Territory | An area that is occupied and defended by animals |
| Drilling in Anarctica | Could cause an oil spill that harms penguins |
