part 2

organisms

that have been discovered on

Earth that survive in

environments that were once

thought not to be able to

sustain life

Conversion to these gaseous forms is

known as

the most important

among the many elements

released to ecosystem from rock

formations because it is often

limited in supply.

Subterranean water is held in

cracks and pore spaces.

Excessive rain or snowmelt can

produce overland flow to creeks

and ditches.

form of rain, snow

and hail comes from clouds.

As water vapor rises, it cools and

eventually condenses, usually on

tiny particles of dust in the air.

Water vapor is also emitted from

plant leaves by a process called

As water is heated by the sun,

surface molecules become

sufficiently energized to break free

of the attractive force binding them

together, and then evaporate and

rise as invisible vapor in the

atmosphere.

Presents the total amount of

energy present at each trophic

level, as well as the loss of energy

between trophic levels.