Unit 3 Part A Test

____________________ wide variety of species of organisms in an ecosystem.

• Niche

• Ecology

• Biodiversity

• Competition

__________________ how an organism survives, including its habitat, and how it obtains food and shelter; the role an organism plays in the environment.

• Niche

• Biodiversity

• Ecology

• Habitat

________________ when organisms fight over food ,water, shelter, and mates.

• Niche

• Biodiverstiy

• Ecology

• Competition

_____________________ is the study of interactions between organisms.

• Niche

• Biodiversity

• Ecology

• Succession

___________________ the place or location in which an organism lives.

• Habitat

• Niche

• Ecology

• Biodiversity

__________________ is an old growth forest with lots of species of organisms; a "mature" forest that has a lot of biodiversity.

• Climax Community

• Habitat

• Pioneer Species

• Competition

_____________________ anything that restricts or limits the number of organisms in a population(like food, water, shelter, mates, sunlight)

• Pioneer Species

• Habitat

• Limiting Factors

• Succession

_________________ the first organisms to grow on a rock such as lichen.

• Producers

• Pioneer Species

• Lichen

• Climax Species

__________________ is the development of an ecosystem over time.

• Succession

• Ecology

• Biodiversity

• Niche

__________________ help recycle matter by breaking it down into simple, energy rich compounds.

• producers

• decomposers

• herbivores

• limiting factors