Ecology Review Biology

All of the birds in an area are just one part of food web that includes all living things in that area. Organisms do not live in isolation. If an organism is removed from the food web, increases in number, or decreases in number, the whole food chain will be affected in some way.

• community
• population
• ecosystem
• species

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A group of the same species living together is a(n)

• population
• community
• ecosystem
• biome

All the living things on earth make up the

• geosphere
• hydrosphere
• biosphere
• atmosphere

Nonliving factor that affects an ecosystem...

• biotic factor
• abiotic factor
• food chain 
• biome

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Living factors or organisms that affect an ecosystem

• abiotic factors
• species
• trophic level
• biotic factors

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What are the biotic factors in this image?

• sunlight, elephants, and grasses
• sunlight, water,  and air
• elephants, plants, trees 

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What are the abiotic factors in this image? 

• water, sunlight, air
• birds and plants
• water, plants, and birds 

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An ecosystem contains living and nonliving things.

• True
• False

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Communities are made up of 

• Different Ecosystems
• Same Species
• Different Populations
• atoms

The penguins in this image all belong to the same species and live in the same area.

• Organ
• Organism
• Population
• Community