Species that are endanger of being extincted.
Species that could go endangered.
Species required to show that the ecosystem is healthy. Ex owl in the old growth forest.
First species to start out in an ecosystem. Ex. Lichens, grass, moss.
Caused by a major event. Ex. a natural disaster! Causes the ecosystem to have to start all over.
Population Growth rate(when it will even out), The rate at which the population increases, Ex. Romania's population growth rate is -0.007 and Polands is 0.000
The number of people the country increases by.
Figure out by multiplying the original # of people to the growth rate.
Example! easter Island!
Causes: Runoff, ersion, urbanization, Impermiable surfaces cause stormwater runoff to travel into grasses or water ways, Impermiable-not allowing water through it, Urbanization
Point source is when you can locate the source of the pollution
nonpoint source is when the source is untraceable and you can not locate the source
organic pollutants are natural ones such as food processing waste, brush and debre from logging, detergens, or insecticides and herbicides.
inorganic pollutants are not natural. for example; acidity, amonia from food processing waste, fertilizers, heavy metal from cars, or silt or sediment from construction sites and logging.
Watersheds, A basin where all the runoff of an area goes, watershed
Oceans hold 87% of the Earth's water!, Desalination - Removing salt from the water
Surface water(inclding lakes, rivers, swamps, wetlands and other bodies of water), ground water (aquifers), icecaps and water in the soil and air make up the other 13%, 40% of all the surface water is poluted, Uses water purification to remove pollutants from the water