Cycles

Front

The process where plants absorb water through the roots and then give off water vapor through pores in their leaves.

Back

Transpiration

Front

The draining away of water from the surface of an area of land.

Back

run-off

Front

What are formed when water vapor condenses?

Back

Clouds

Front

What part of the water cycle does this picture show? Options: condensation, precipitation, evaporation

Back

evaporation

Front

What part of the water cycle does this picture show? Options: condensation, precipitation, evaporation

Back

precipitation

Front

What is the energy source for the water cycle?

Back

the sun

Front

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

Back

bacteria

Front

How do animals get the nitrogen they need?

Back

From the food they eat

Front

What is the process of combining nitrogen gas with other elements to make nitrogen into usable compounds?

Back

nitrogen fixation

Front

What is the formula for atmospheric nitrogen?

Back

N₂