Biomes are unique situations. They are very
specialized ecosystems that only exist in certain
parts of the world. They are ecosystems that are
defined by their environments. Factors like
temperature, rainfall, and altitude all decide what
NATURAL RESOURCES AND
The Earth is a closed system. For our examples, we need to think that
nothing comes in (except energy) and nothing goes out (except energy). Even
the amount of energy that moves in and out of the Earth is equal. If more
WHERE IS GROUNDWATER?
Groundwater is water that is under the ground. Okay. You're done with the
tutorial. If you want more, you should know that groundwater is extremely
important. Civilization gets most of its water from groundwater sources. There
WE NEED THE POWER
It's just that simple. We need power. All of the time. We use one form of power
to generate electricity. We use another form of power to run our cars. We even
need power cook on the stove. Power needs are all around us but there are
Let's start with standing freshwater biomes, from a river to a lake or pond. The
water doesn't move very quickly here. It gives animals a chance to grow up.
You'll find larger fish, insects, and plants in this lake. Scientists divide lak
Two huge factors affect the global radiation balance, shortwave radiation
(coming in from the Sun) and longwave radiation (given off from the Earth).
We'll cover short wave radiation first.
THE SHORT WAVES
You already understand that radiation com
ECOLOGY - THE STUDY OF
Ecology is a science all by itself but it is also a branch of the larger sciences of
biology and geography. Ecology is the study of organisms and the
environments they live in. As an ecologist, you don't just study a fish
AN ECOLOGICAL SYSTEM
The word ecosystem is short for ecological systems. An ecosystem includes
all of the living organisms in a specific area. These systems are the plants and
animals interacting with their non-living environments (weather, Earth, Sun,
COVERING THE LITHOSPHERE
Although soil has many uses, it is really just a layer of dirt between the
atmosphere and the bedrock in the tectonic plates. The top layer of the
planet is called the lithosphere. Soil is the loose stuff on the surface of the
Once the energy from the Sun gets to Earth it begins to circulate through
different ecological systems. The energy slowly spreads out across the planet.
It moves with the water. It moves with the wind. It even moves because the