| A | B |
|---|
| grassland | Between 25-75 cm of rain each year; populated by grasses and many large herbivores. |
| organism | A living thing. |
| habitat | An environment that provides the things an organism needs to live, grow, and reproduce. |
| tundra | Extremely cold winters, warmer summers; windy; very dry; no trees. |
| ecosystem | The community of organisms that live and interact in a particular area, along with their nonliving surroundings. |
| community | All the different populations that live together and interact with each other in an area |
| desert | Hot in daytime, cool or cold at night; very dry. |
| population | All the members of one species in a particular area. |
| tropical rain forest | Warm temperatures do not vary much throughout the year; very wet and humid; greater variety of species than any other biome. |
| biome | A group of land ecosystem with similar climates and organisms. |
| producer | An organism that can make its own food. |
| decomposer | An organism that breaks down wastes and dead organisms. |
| omnivore | A consumer that eats both plants and animals. |
| scavenger | A carnivore that feeds on the bodies of dead organisms |
| herbivore | A consumer that eats only plants. |
| carnivore | A consumer that eats only animals. |
| abiotic factor | A nonliving part of an organism’s habitat. |
| biotic factor | A living part of an organisms’ habitat. |
| boreal forest | Warm, rainy summers; very cold winters with heavy snow; trees produce cones with seeds that are eaten by many animals. |
| deciduous forest | Warm summers, cold winters; receive at least 50cm of precipitation per year; trees shed their leaves and grow new ones each year. |
