1B: Nutrient Cycles Review

Plants are assembled by the uptake of nitrates

This step of the water cycle is completed when water molecules soak into the ground.

________________ is the slowest of all the nutrient cycles.

Burning of wood and fossil fuels by factory and auto emissions transfers carbon to the atmosphere as carbon dioxide.

The biggest reservoir for nitrogen is:

Step of the water cycle where water remains on the surface of the earth and moves with the terrain.

The biggest reservoir for phosphorus is:

What process of the water cycle occurs when water molecules fall from the clouds?

What process of the water cycle occurs when clouds form?

the conversion of the ammonia to nitrates

What process of the water cycle occurs when water molecules leave the leaves of plants?

Animals eat plants for food, taking up the organic carbon (carbohydrates). Plants and animals break down these organic molecules and release energy, water and carbon dioxide.

The nitrogenous breakdown products of amino acids are converted into ammonia

bacteria convert ammonia and nitrate into nitrogen and nitrous oxide N2 & N2O Nitrogen is returned to the atmosphere to start the cycle over again.

Nitrogen can be changed to nitrates

Phosphorus is commonly the limiting factor for plant growth because it forms ____________ compounds most of the time.

The 2 major processes involved in the carbon cycle are:

There is no _____________ state of phosphorus.

Carbon dioxide is taken up by plants and converted to glucose

What process of the water cycle is completed when water molecules change from a liquid to a gas?