the day-to-day condition of Earth's atmosphere.

Climate

refers to average conditions over long period.

microclimates

Environmental conditions that vary over small distances

greenhouse effect

function like glass in a greenhouse, allowing visible light to

enter but trapping heat.

tolerance

the ability to survive and reproduce under a range of environmental circumstances,

habitat

the general place where an organism lives.

niche

not only what an organism does, but also how it interacts with biotic and abiotic factors in the environment.

resource

any necessity of life, such as water, nutrients, light, food, or space.

competitive exclusion principle

states that no two species can occupy exactly the same niche in exactly the same habitat at exactly the same time.

predation 
An interaction in which one organism kills another for food.