Ecosystems

• ◦A Ecosystem is al the interacting parts of a biological community and it's enviorment.
• ◦E.g.- Sahara Desert, Rain forest.

This is an ecosystem that is capable of withstanding pressure and giving suppourt to a variety of organasims.

• ◦Biotic means the living parts of an ecosystem
• .E.g.- Animals, plants, micro organasims, Fungi, bacteria, Ect...

• The non living parts of an ecosystem.
• E.g.- Water, sunlight,light Ect...

• ◦LithoSphere
• ◦BioSphere
• HydroSphere
• ◦Atmoshere

• ◦The LithoSphere is the hard part of the earths surface.
• ◦E.g.-Rock and Dirt.

The hydro sphere is all the water on the earth including lakes. oceans and ground water.

• ◦This is the layer of gases above earths surface.
• ◦E.g.-Air

The reigons of the earth where living organasims exist.

Nutrients are a chemical that is essential to living things and is cycled through the ecosystems.

This is a process in which nutrient levels in aquatic ecosystems increases leading to aan increase in the popoulation of primary producers.

This is a process that changes solar energy into chemical energy.

• In brackets means towords the bottom right of the letter and smaller then the letter.
• Equation= 6CO(2) + 6H(2)-----> C(2)
• H(12) O(6) + 6O(2).

Trohic level is a category of organasims that is defined by how the organasims gain their energy.

• Trophical efficiency is a mesure of the amount of energy or biomass transfered from one trophic leve to the next higher trophic level.
• When an animal eats another animal the animal only gets 10% energy from the animal. This is because the other animal uses energy and it could be because the curret animal didn't eat the whole animal.

Biomass is defined as being the total mass of living organasims in a defined group of area.

Bioaccumulation is a process in which materials especiallyy toxins are ingested by an organasim at a rate greater then they are elimnated.

Biomagnification is the increase in the concentration of a toxin as it moves from one trophic level to the next.

Cellurlar resperation is a process that releases energy from organic molecules, especially carbohydrates, in the presence of oxygen. (Aerobic)

This is  process that releases energy from organic molecules, especially carbohydrates in the absense of oxygen.(Anerobic)

• They are atmosoheric gases that prevent heat from leaving the atmosphere, thus increasng the tempature of the atmosphere.
• The green house gases are- Water vapor,Carbon Dioxide and methane.

Green house effect is the warming of earth as a result of green house gases, which trap some of the energy that would otherwise leave earth.

Acid precipitation is rain, snow, or fog that is unnaturally acidic due to gases in the atmosphere that react with water to form acids.