Biogeochemical Cycles

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• The Phosphorus cycle

Identify the cycle pictured.

• The Water cycle
• The Carbon cycle
• The Nitrogen cycle
• The Phosphorus cycle.

How do animals get nitrogen?

• the atmosphere 
• eating other organisms
• rainwater
• lightning 

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

• True
• False

Which of the following removes carbon from the atmosphere?

• Combustion
• Respiration
• Photosynthesis
• Death

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

• respiration and photosynthesis
•  decomposition and respiration

What is the water cycle?

• the 3 forms of water
• the movement of water on, above, or below the surface of the Earth
• when water melts
• when clouds form

What is the energy source that drives the water cycle?

• The moon T

• The heat from our home in the winter all around the world

• The sun

• he heat generated solely from the core of the earth

What converts nitrogen gas into a usable form for plants and animals?

• bacteria

• rain

• fungi

• car exhaust

Organisms that need nitrogen to survive

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