Insects help forest ecosystems by:

• Removing old trees

• Recycling nutrients

• Providing new habitat and food for wildlife

• All of the above

Planting a tree is one of the best things you can do for your local environment and for the planet because:

• They produce oxygen

• They remove carbon dioxide and contaminants from the air

• They provide habitat for birds and other wildlife

• All of the above

All of the following EXCEPT ___ help limit harmful emissions in our environment.

• walk instead of driving your car

• carpool

• use public transport

• remove the exhaust pipe from your car

You can reduce energy use by:

• staying inside when it is cold

• turning off lights when not in use

• using older appliances

• take longer showers

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

• population

• niche

• abitotic

• ecosystem

What does the picture show?

• A Food Web

• An Ecosystem

• A Food Chain

• A nice scenery

Which of the following are factors that could cause extinction?

• Destruction of animals' habitat

• Climate change

• Increased human population (more people)

• ALL of the above could cause extinction

_______ are consumers that eat only meat.

• Herbivore

• Omnivore

• Carnivore

• ALL of the above

If producers died off, the following would happen...

• the primary consumer population would grow.

• the secondary consumer population would grow.

• all food chains would start to die off.

• only herbivores would die.

What is the main source of energy in an ecosystem?

• Producers

• Consumers

• Sunlight

• Decomposers