is the scientific study of interactions among organisms and between organisms and their environment.

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.

A group 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 thier nonlinving, or physical, environment.

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

These organisms use energy from the environment to fuel the assembly of simple inorganic compounds into complex organic molecules.

Organisms that can capture energy from sunlight or checmicals and use it to produce food from inorganic compouinds.

These organisms use light energy to power chemical reactions that covert carbon dioxide and water into oxygen rich carbohydrates such as sugars and starches.

When organisms use chemical energy to produce carbohydrates.

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

Organisms that relies on other organisms for its energy and food supply.

Obtain energy by eating only plants.

Organisms that obtain energy by eating animals.

Organisms that obtain energy by eating both plants and animals.

Organisms that feeds on plant and animal remains and other dead matter.

These organisms break down organic matter and obatin energy from them.

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

A network of complx interactions formed by the feeding relationships amoung the various organims in an ecosystem.

Step in a food chain or food web.

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

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

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Chapter 3

The Biosphere

Question	Answer
Ecology	is the scientific study of interactions among organisms and between organisms and their environment.
Biosphere	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	A group of individuals that belong to the same species and live in the same area.
Communities	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 thier nonlinving, or physical, environment.
Biome	A group of ecosystems that have the same climate and similar dominant communities.
Autotroph	These organisms use energy from the environment to fuel the assembly of simple inorganic compounds into complex organic molecules.
Producer	Organisms that can capture energy from sunlight or checmicals and use it to produce food from inorganic compouinds.
Photosynthesis	These organisms use light energy to power chemical reactions that covert carbon dioxide and water into oxygen rich carbohydrates such as sugars and starches.
Chemosynthesis	When organisms use chemical energy to produce carbohydrates.
Heterotrophs	Organisms that rely on other organisms for their energy and food supply.
Consumers	Organisms that relies on other organisms for its energy and food supply.
Herbivores	Obtain energy by eating only plants.
Carnivores	Organisms that obtain energy by eating animals.
Omnivores	Organisms that obtain energy by eating both plants and animals.
Detrivores	Organisms that feeds on plant and animal remains and other dead matter.
Decomposers	These organisms break down organic matter and obatin energy from them.
Food Chain	A series of steps in an ecosystem in which organisms transfer energy by eating and being eaten.
Food Web	A network of complx interactions formed by the feeding relationships amoung the various organims in an ecosystem.
Tophic level	Step in a food chain or food web.
Ecological pyramid	A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or a food web.
Biomass	The total amount of living tissue within a given trophic level.

Created by: brightk

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