KS3 - Ecosystems

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

• population
• niche
• abitotic
• ecosystem

Which group do fungi, bacteria, and termites belong to?

• decomposers
• producers
• herbivores
• omnivores

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

• decomposer
• consumer
• herbivore
• producer 

Field mice eat corn. Which would most likely happen if the field mouse population grew?

• There would be more corn to feed the field mice.
• There would be less corn due to the mice eating it.
• The habitat would get overpopulated because the mice woudl eat too much.

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

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

• decrease
• stay the same
• increase

What are interconnected food chains called?

• consumers
• predators
• food web

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.

All food chains_____________________

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

How does energy enter an ecosystem? 

• sunlight
• soil 
• animals 
• invasive species