Biochemical Cycles

Define the process shown here:

• Carbon Cycle
• Respiration
• Photosynthesis
• Magic

What is one of the most important processes that removes carbon from the atmosphere? 

• photosynthesis
• cellular respiration
• erosin
• soil respiration

Which process moves carbon stored in fossil fuel into the atmosphere?

• When fossil fuels are burned, carbon enters the atmosphere as carbon dioxide.
• The denitrifying bacteria turns the fossil fuel into carbon dioxide gas.
• Decomposers convert the fossil fuels into greenhouse gases like carbon dioxide.
• The fossil fuels react with the soil to produce carbonates and carbon dioxide.

What number would represent photosynthesis in this
diagram?

• 1
• 2
• 3
• 4

plants require _, _, and _ for photosynthesis

• sunlight 
• water 
• carbon 
• sunlight,water and carbon dioxide

what waste product released during the carbon dioxide oxygen cycle is necessary for the survival of animals ?

• carbon dioxide 
• oxygen 
• people and animals 
• photosynthesis

removing large numbers of trees result in _

• a decrease in oxygen production
• an increase in oxygen production
• oxygen and carbon 
• carbon and oxygen 

Organisms that need nitrogen to survive

• only plants
• only animals
• only bacteria
• all living organisms

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

An organism that needs to eat other organisms to obtain energy is known as a:

• Parasite
• Producer
• Consumer
• Mutualist