Levels of Organization & Populations

A ___________ factor is one that is nonliving such as water, soil, and air.

• migration

• density

• abiotic

• Biotic

Drought (lack of rain) , fewer plants, and fewer nesting sites are examples of __________ factors.

• limiting

• biotic

• abiotic

• carrying

What are two ways populations increase?

• immigration & deaths

• immigration & births

• emigration & deaths

• emigration & birthds

Which of the following could occur if there is too much immigration into an ecosystem?

• more competition

• more disease

• more predation

• all of these could occur

A ___________ factor is the living components of an ecosystem such as plants and animals.

• denisty

• abiotic

• biotic

• migration

A ____________ contains all the living and nonliving components of an ecosystem (biotic & abiotic factors).

• ecosystem

• community

• population

• biome

A __________ is a large region on Earth with a specific climate, physical features, plants, and other organisms. The areas share similar latitudes.

• ecosystem

• community

• biome

• population

The picture below represents which level of organization in an ecosystem?

• a community

• a population

• an biosphere

• a biome

Which of the following is an abiotic factor in a forest ecosystem?

• grass

• water

• deer

• trees

The area above & below Earth's surface that can support life is called the ________.

• biome

• population

• biosphere

• community