Unit 1 Part 2 Cycles

algae

soil bacteria

the moon

the ocean

Photosynthesis

Cellular respiration

Decomposition

Burning of fossil fuels

Photosynthesis

Cellular Respiration

Decomposition

Burning of fossil fuels

Nitrifying bacteria and lightning

Decomposing plant and animal material

Denitrifying bacteria and volcanic activity

Nitrates taken up by plant roots

N

N₂

NH₃

NO₃

Bacteria play an important role in the conversion of compounds from the atmospheric gas to the form of the compound taken up by plants.

Phosphorus and nitrogen are both required for plant growth.

Volcanic eruptions are a major source of non-anthropogenic inputs.

Processes include weathering and erosion.

To make DNA, RNA and ATP.

To make amino acids and proteins.

To make carbohydrates.

To make fats.

Hydrogen sulfide

Sulfuric acid

Nitrogen oxides

Sulfur dioxide