Abiotic and Biotic Factors, Ecosystems

A living or once-living organisms in an ecosystem is a

• population
• biotic factor
• abiotic factor
• community

A nonliving element in an ecosystem is an 

• animal
• abiotic factor
• biotic factor
• organism

Which of the following is not an abiotic factor?

• sun
• temperature
• soil
• grass

Which of the following is not a biotic factor?

• mushroom
• air
• elephant
• coyote

Is a fern an abiotic or biotic factor? 

• abiotic
• biotic

Is a weather an abiotic or biotic factor? 

• abiotic
• biotic

Is sunlight an abiotic or biotic factor? 

• abiotic
• biotic

Temperature, light, air, water, and soil are all  _____  parts of the environment

• alive
• biotic 
• abiotic
• living

Limiting factors are sometimes helpful because they can keep the population from getting too large.

• True
• False

Any thing or organism that regulates the size of a population of another organism is known as __________.

• a limiting measure
• a limiting factor
• factorization
• materialization of precipitation