Category 4 Ecosystems

Multiple Choice

What is an ecosystem?

• a community of living organisms, interacting with their physical environment

• the complex of physical, chemical, and biotic elements that exist in nature.

• the natural home or environment of a plant, animal, or other organism.

• the specific role an organism plays within an it's habitat, encompassing the environmental conditions it needs to survive

Multiple Choice

If the populations of grasshoppers would decrease, what affect would that have on the population of lizards?

• Increase

• Stay the same

• Decrease

• Unable to determine

Multiple Choice

What is the difference between the biotic and abiotic factors?

• Biotic factors are living things and abiotic factors are nonliving things.

• Biotic factors are nonliving things and abiotic factors are living things.

Multiple Choice

Brandon and his dad cut a tree that fell in a storm into smaller sections. Then they split the wood to use for firewood. Firewood is an example of which type of factor.

• Biotic

• Abiotic

Multiple Choice

An arctic blast pushed its way through several of the Northern state in the United State. The temperatures dropped below freezing for several days. Temperature is an example of which type of factor?

• Biotic

• Abiotic

Multiple Choice

Temperature, sunlight, oxygen, water, and soil are all  _____  parts of the environment

• alive
• biotic 
• abiotic
• living

Draw

Draw an example of a food chain. Include 3 trophic levels: