The scientific study of interactions among organisms and between organisms and their environment or surroundings.

Contains the combined portions of the planet in which all of life exists, including, land, water and air, or atmosphere.

A group of organisms so similar to one another that they can breed and produce fertile offspring.

Groups of individuals that belong to the same species and live in the same area.

Assemblages of different populations that live together in a defined area.

A collection of all the organisms that live in a particular place, together with their non-living, or physical environment.

A group of ecosystems that have the same climate and similar dominate communities.

an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.

the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals.

Organisms that rely on other organisms for their energy and food supply.

Feed on plant and dead animal remains and other dead matter.

A series of steps in which organisms transfer energy by eating and being eaten.

Each step in a food web of food chain

A diagram that shows the relative amounts of energy pr matter contained within each trophic level in a food chain or food web.

Organisms that rely on other organisms for their energy and food supply.

Links all the food chains in an ecosystem together.

The total amount of living tissue within a given trophic level.

Connects biological, geological, and chemical aspects of the biosphere.

The process by which water changes from liquid form to an atmospheric gas.

Water can enter the atmosphere by evaporating from the laves of plants.

All of the chemical substances that an organism needs to sustain life.

A process that releases nitrogen into the atmosphere once again

The rate at which organic matter is created by producers.

When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly

An immediate increase in the amount of algae and other producers.

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Chapter 3

Term	Definition
Ecology	The scientific study of interactions among organisms and between organisms and their environment or surroundings.
Bioshphere	Contains the combined portions of the planet in which all of life exists, including, land, water and air, or atmosphere.
Species	A group of organisms so similar to one another that they can breed and produce fertile offspring.
Populations	Groups of individuals that belong to the same species and live in the same area.
Community	Assemblages of different populations that live together in a defined area.
Ecosystem	A collection of all the organisms that live in a particular place, together with their non-living, or physical environment.
Biome	A group of ecosystems that have the same climate and similar dominate communities.
Autotroph	an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide.
Photosynthesis	the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
Chemosynthesis	the synthesis of organic compounds by bacteria or other living organisms using energy derived from reactions involving inorganic chemicals.
Consumer	Organisms that rely on other organisms for their energy and food supply.
Carnivore	Eat other animals
Detritivore	Feed on plant and dead animal remains and other dead matter.
Food Chain	A series of steps in which organisms transfer energy by eating and being eaten.
Trophic Level	Each step in a food web of food chain
Ecological Pyramid	A diagram that shows the relative amounts of energy pr matter contained within each trophic level in a food chain or food web.
Producer	Make their own food
Heterotroph	Organisms that rely on other organisms for their energy and food supply.
Herbivore	Eat only plants
Omnivore	Eat both plants and animals
Decomposer	Break down organic matter
Food Web	Links all the food chains in an ecosystem together.
Biomass	The total amount of living tissue within a given trophic level.
Biogeochemical Cycle	Connects biological, geological, and chemical aspects of the biosphere.
Evapration	The process by which water changes from liquid form to an atmospheric gas.
Transpiration	Water can enter the atmosphere by evaporating from the laves of plants.
Nutrient	All of the chemical substances that an organism needs to sustain life.
Denitrification	A process that releases nitrogen into the atmosphere once again
Primary Productivity	The rate at which organic matter is created by producers.
Limiting Nutrient	When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly
Algal Bloom	An immediate increase in the amount of algae and other producers.

Created by: hunterstuart

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