Miscellaneous	Nitrogen fixation	True or False	Nitrogen cycle	Nutrient cycles
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50	50	50	50	50
Final Question

Infiltration is related to this cycle.

Infiltration is related to this cycle.

Water

Rainwater percolates into the soil and becomes.

Groundwater

This far away external input is required for photosynthesis

Sunlight

Photosynthesis and respiration are part of this cycle

Carbon cycle

When bacteria change atmospheric nitrogen into ammonia.

Nitrogen fixation

This is the movement of nitrogen between the environment and living things.

Nitrogen cycle

This is the process in soil that is able to change nitrogen gas into forms that plants can use.

Nitrogen fixation

The breakdown of substances into simpler molecules is called.

Decomposition

Organisms need nitrogen to

build DNA and animo acids

This is a bacteria that takes nitrogen from the soil and shares it with plants.

Rhizobium

When organisms die, decomposers break down the remains.

Certain types of bacteria in the soil converts nitrogen to a gas, which is returned to the organism.

Calcium and Vitamin D are examples of what living cells need.

Nitrogen is a greenhouse gas.

Lightning is used to create ammonium

Percent of Earth's atmosphere is nitrogen gas?

78%

Type of plant that is able to fix nitrogen in a symbiotic relationship

Legume

Name two ways organism get the nitrogen they need.

eating plants or other organisms

Two types of decomposers are

fungus and bacteria

This is the type of bacteria that changes ammonia to nitrites.

Nitrosomonas

primary consumers get carbon from

plants

This gas is a byproduct of photosynthesis.

oxygen

The process of using glucose and oxygen to create carbon dioxide

respiration

Plants turn carbon dioxide and water into

glucose

Plants cells that use carbon dioxide in photosynthesis

cloroplasts

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