layer of soil, water, and air that sustains life.
biome, ecosystem, community, population, organism
Shows the energy transferred in an ecosystem, and the sequence in which energy is transferred from one organism to the next as one eats the other. All chaims start with the Sun.
primary consumer, secondary consumer, tertiary consumer
Closely related to food chain, but shows all the different ways that energy can be transferred.
The trophic levels are in a Food Chain and a Food Web. Energy is passes on from one level to the next, but only 10% of the energy is passes on. So that means that 90% is lost between levels.
An area with grass or grasslike vegetation. Moderately dry climatic conditions and things such as floods or fires. Grasslands are found in tropical, subtropical, and temperate regions and are located between forests and deserts.
The variety of life in the world or in a particular habitat or ecosystem
All of the non-living things in an area or ecosystem
All of the living factors or things in an area
limiting factors control the growth of a species, so it does not overpopulate or excede its carrying capacity.
a biological community of plants and animals which, through the process of ecological succession — the development of vegetation in an area over time — has reached a steady state.
The number of people, other living organisms, or crops that a region can support without environmental degradation.
population growth is the increase in the number of people who inhabit a territory or state
an epidemic during the Middle Ages that killed a giant number of people which decreased population drastically.
Able to be maintained at a certain rate or level. Such as conserving an ecological balance by avoiding depleting natural resources.
The increase in population at a constant rate over time
contamination of water by undesirable foreign matter. It impacts our oceans, our surface water, and our underground water.
the pollution put into water from one source like a factory.
pollution put into water from many different sorces such as cars or fertilizers.