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Commensalism
A symbiotic relationship where one species benefits without harming the other species.
Parasitism
A symbiotic relationship between a parasite and a host. One species benefits while another species is harmed
Symbiosis
A close relationship between two different species living together. The three types are mutualism, commensalism and parasitism.
Zooplankton
Microscopic organisms in the water.
Decomposers
An organism that gains energy from breaking down the remains of dead organisms and waste of living things.
Heterotrophs
All animals that are consumers of other organisms.
Autotrophs
All producers are called autotrophs. (Including algae, plants, some bacteria)
Community
All populations that live in a set area during the same time period. (Example, deer, raccoons, bears, turtles, snakes, fish, insects all living in a forest area
Population
All the organisms of a species that LIVE in the same area and are competing for resources (food, water, shelter).
Species
A group of organisms that share most characteristics and can reproduce offspring.
Abiotic
All nonliving parts of an ecosystem, such as light, weather, soil and water
Biotic
Living factors of an ecosystem.
Ecosystems
All living and nonliving parts of an environment as well as all interactions among them.
Adhesion
When molecules of different types are drawn together.
Cohesion
When one molecules of one type are drawn to each other.
Surface Tension
The tightness across the water molecules pulling together. (Water has the highest surface tension of all liquids)
Universal Solvent
As water passes through the water cycle it dissolves minerals and gasses and carries them to the oceans.
Bioindicator
Organisms used to measure the health of an ecosystem.
Turbidity
Clarity of the water system, or many solid particles are in the water.
pH
(Power of Hydrogen ) Measurement of acid in the water, how acidic or basic the water is.
Algal Bloom
Extremely rapid growth of algae in a water ecosystem caused by nutrients (nitrates and phosphates).
Hydrological Cycle
The movement of water from the Earth into the air and back to the Earth
Point Source Pollution
Pollution that does come from a single identifiable source.
Non-Point Pollution
Pollution without a single identifiable source.
Upwelling
The flow of cold nutrient-rich water from the bottom of the ocean to the surface waters.
Runoff
Water that flows over the land to rivers, lakes and oceans.
Pollutant
Any substance that has a negative effect on the ecosystem.
Salinity
The amount of salt in a given amount of water. Measured in PPT (parts per thousand) River has .5 ppt and ocean water is between 32 and 37 ppt.
Ocean Basin
The part of Earth’s surface that is covered with ocean (salt) water.
Estuaries
Body of water in which freshwater from the river meets and mixes with salt water from the ocean. (The ocean’s nurseries)
Watersheds
Areas of land that drains into a stream, river, lake or other body of water
Infiltration
Water on the ground enters and permeates through the soil.
Aquifer
Large stores of fresh water in soil and rock below the Earth’s surfac
Groundwater
Water below the Earth’s surface. (.62% of global fresh water
Glacier
Mass of ice and snow that moves slowly over the Earth’s surface. (2.15% of global fresh water)
Fresh Water
Water that is not salty (saline).
Stewardship
Humans should use the water in a way the pr
Hydrosphere
All of the water found on, above, and under the Earth’s surface.


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