| A | B |
|---|
| Ecology | Study of man and his environment |
| Types of environment | Physical and biotic |
| Habitat | Natural home of an organism |
| Physical factors of a physical environment | amount of light, water, minerals, pH value, and amount of oxygen |
| Different types of consumers | Herbivores, carnivores, omnivores, scavengers, decomposers |
| relationship in which two animals benefit each other through cooperation | Mutualism |
| Many populations make up a | community |
| Many communities make up a | ecosystem |
| Many food chains make up a | food web |
| Two types of food pyramids | Pyramid of biomass and pyramid of numbers |
| Two important cycles in ecology | Nitrogen and carbon cycle |
| Opposite of a predator is a | prey |
| Skill in which an animal blends in with its environment | Camouflage |
| Food chains consist of | Food producer and primary, secondary and tertiary consumer |
| A term for defining an animal's unique way of fitting into an environment | Ecological niche |
| Rain caused by pollution that kills animals and plants | Acid rain |
| Process in which a substance is reused | Recycling |
| Excess carbon dioxide in the air traps heat and contributes to | global warming |
| Harmful chemicals in factory waste | kills animals |
| Overuse of a resource is | over-exploitation |
