Cycling of Matter - Carbon Cycle

Fill in the Blank

Everything in the world is made of...

Multiple Choice

All of the carbon in existence is continually recycled in the carbon cycle

• True
• False

Multiple Choice

oxygen is a gas produced by _ and used by  _ 

• plants and animals 
• photosynthesis and carbon dioxide 
• animals and plants 
• carbon dioxide and photosynthesis

Multiple Choice

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

Multiple Choice

What does not produce carbon dioxide?

• Photosynthesis
• Burning Fossil Fuels
• Animal respiration
• Plants decaying

Multiple Choice

When organisms die, what process returns their carbon back into the atmosphere?

• Respiration

• Decomposition

• Combustion

• Erosion

Multiple Choice

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Hydrosphere

• Atmosphere
• Geosphere

• Biosphere

Multiple Choice

Respiration is the process by which animals take in _____ and release _____. 

• photosynthesis, air
• carbon, oxygen
• oxygen
• oxygen, carbon dioxide

Multiple Choice

If you are an organism whose realized niche is to break down organic matter from the ecosystem into nutrients, you are probably a ____________.

• Producer

• Herbivore

• Primary consumer

• Decomposer

Multiple Choice

Plants use ____________ to make their own food

• Water

• Sunlight

• Carbon dioxide

• All of these

Multiple Choice

How do living organisms return carbon to the atmosphere in the carbon cycle?

• respiration and photosynthesis
•  decomposition and respiration

Multiple Choice

Where do ANIMALS get their carbon from?

• The sun

• Other animals breathing

• The dirt

• Their food