A multicellular or single-celled organism (protists) that lives in the water and uses sunlight as an energy source ( for example: seaweed or diatoms).
The process of eroding or being eroded by wind, water, or any other natural agents.
An area of land that water runoffs or snow melts that flow across or through on its way to a body of water.
The lower end of a river that feeds into the salty, open ocean where the fresh water and salt water mix.
a measurement of hydrogen ions concentration or how much acidity is in a solution, or in a liquid
air pollutants mix with water in the atmosphere to form acid droplets of rain, snow, or mist.
acid rain
pollution is discharged from a single source EX: factory, wastewater treatment plant, leaking oil tanker, landfills, mines, storage tanks
point source solution
the height above a given sea level.
measure of all salts dissolve in the water.
the role of an organism that takes part in an ecosystem including its habitat, feeding activities, and interactions with other species
Any resource that can be replaced naturally or by humans in a short amount of time, but they may run out if they are oversued or managed poorly EX: trees, water
renewal resources
somewhat salty
an effort to return degraded ecosystems to conditions as similar as possible to their natural state EX: replant trees after a forest fire
Using resources in a wise, responsible manner.
water that fills the cracks and spaces in underground soil and rock layers.

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