Which of these elements and compounds are recycled on Earth? Select all that apply.

• Water (H2O)

• Carbon Dioxide (CO2)

• Nitrogen (N)

• Phosphorus (P)

Which of these would primarily be affected with a slight increase in solar radiation (sunlight)? Select all that apply.

• Condensation of water into clouds.

• Runoff of water into lakes and rivers.

• Evaporation of water from lakes, rivers and oceans.

• Transpiration from plants.

Identify the processes depicted in the water cycle.

a

b

c

d

e

Transpiration

Condensation

Precipitation

Runoff

Evaporation

How are the carbon cycle and food chains related?

• Producers turn the energy from the sun into useable energy for consumers.

• Heterotrophs undergo photosynthesis.

• Consumers turn energy from the sun into useable energy.

• The carbon cycle creates new energy on earth.

Identify the processes shown in the carbon cycle diagram.

a

b

c

d

e

Decomposition

Fossil Fuels

Carbon dioxide (CO2)

Photosynthesis

Cellular Respiration