What do all living things depend on for survival?

• Their physical surroundings

• Only water

• Only sunlight

• Only other animals

Which of the following is NOT part of physical surroundings?

• Land

• Water

• Air

• Plastic

What do plants put into the air?

• Carbon dioxide

• Nitrogen

• Oxygen

• Hydrogen

What do animals take out of the air?

• Oxygen

• Carbon dioxide

• Nitrogen

• Hydrogen

Which type of ecosystem is found in hot, dry areas?

• Rainforest

• Desert

• Grassland

• Deciduous forest

Where are rainforests usually found?

• Cold, dry areas

• Wet, warm areas

• Hot, dry areas

• High mountain tops

Which of the following is a common ecosystem in the United States?

• Tundra

• Deciduous forest

• Coral reef

• Rainforest

How does climate change affect ecosystems?

• It never changes them

• It can change the characteristics of ecosystems

• It only affects animals

• It only affects plants

What might happen to grasslands as a result of climate change?

• They could become wetter

• They could become like deserts

• They could turn into oceans

• They could freeze

What could warmer air temperatures cause plants and animals to do?

• Move farther towards the poles

• Stay in the same place

• Move underground

• Disappear completely