Topic 1

Part/Sphere of Earth that contains life.

Energy can enter/leave but matter does not.

Matter and Energy can leave and enter freely

-Producers use light energy to synthesize organic molecules during photosynthesis
-Consumers break down molecules to get ATP
-Ecosystems are dependant on photosynthetic activity of producers

Less than 1%

1/3

Less energy is absorbed.
-White colours, snow, ect

-Energy is absorbed
-Black colours, soil, mud, cement, ect.

Process which some types of micro-organisms use energy from chemical reactions to produce organic compounds as food for themselves

Feeding level of an organism in a food chain or food web

Magnification of a toxin as it moves up the food chain.

Buildup of substances in an organism over time.

The variety of life on Earth, in all its forms, from genes and bacteria to entire ecosystems

Energy flow in a community. Contains multiple trophic levels.

Pictoral representations of feeding relationships between organisms in an ecosystem.

-Transfers from TL1 to TL2 and so on lose energy as they move down

-Energy is transferred, not destroyed.
-No transfer is 100% efficient.

Recycled

-Number of organisms that exist at each level of the ecosystem

-Amount of dry mass of organisms at each trophic level
-Biomass is a measure of stored energy

-Amount of available energy at each trophic level
-Always a pyramid shape
-Available energy is energy that an organism is able to obtain from its food

Organisms depend on each other to live.

example. SHRUBS -> DEER -> WOLF

no shurbs means no food for deer and no food for wolf, etc.