Ecosystems

A system made up of organisms interacting with one another

• biology
• abiotic
• biotic
• ecosystem

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A __________ includes all living and non-living things in an environment. 

• population
• niche
• abitotic
• ecosystem

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_______ are consumers that eat only meat.

• Herbivore
• Omnivore
• Carnivore

Which organism make their own food through the process of photosynthesis? 

• decomposer
• consumer
• herbivore
• producer 

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Which describes a decomposer?

• an organism that eats only plants
• an organism that makes its own food
• an organism that breaks down dead matter
• an organism that recieves energy from the sun

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What are interconnected food chains called?

• consumers
• predators
• food web

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If the population of prey increases, the population of predators will ________because of the availability of food.

• decrease
• stay the same
• increase

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What would most likely happen if an ecosystem no longer received sunlight?

• The number of herbivores would increase
• The number of plants would increase
• all organisms would adapt
• All living organisms would eventually die

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Examples of how humans negatively affect local ecosystems are

• Building dams, deforestation (cutting down trees), adding point sources to nearby streams to allow for run-off, building roads and structures, and salting roads.
• Creating laws to prohibit fishing from local streams.
• Planting trees and other plants to attract native species.
• Removing non-native species from the environment.

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All food chains_____________________

• have more consumers than producers
• produce and use same amount of energy
• begin with a producer
• are unhealthy 

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