Unit 1

A relationship between two species in which both species benefit

Interaction that benefits one species, no effect on the other

A relationship between two organisms of different species where one benefits and the other is harmed

close interaction between species in which one species lives in or on the other

competition between individuals of the same species

competition between different species

When species divide a niche to avoid competition for resource

An organism’s particular role in an ecosystem, or how it makes its living.

biome with long cold winters and a few months of warm weather; dominated by coniferous evergreens

a coastal biome typified by moderate temperatures and high precipitation

A biome with warmer summers and colder winters than temperate rainforests and dominated by deciduous trees.

biome near the equator with warm climate wet weather and lush plant growth

biome with a low rainfall, yet hot, dry summers, and cold, wet winters; subject to fires

biome characterized by deep, nutrient-rich soil that supports many grass species adapted to cool climates

An area of grassland with scattered trees and bushes

a biome that has little or no plant life, long periods without rain, and extreme temperatures; usually found in hot climates

An extremely cold, dry biome.

Streams

are large, natural streams of fresh water.

Bodies of fresh water (shallow, allows sunlight to go all the way through the water and makes plants grow)

A body of water that is surrounded by land it can be fresh water or salt water.

large bodies of salt water

salt; low productivity; good nutrients; coral; easily destroyed

low lying wetlands usually with grassy vegetation