Question 1

Alien Species

Accepted Answer

A species that is accidentally or deliberately introduced to a new location, usually as a result of human activity.

Question 2

Biodiversity

Accepted Answer

The number and variety of organisms found in a specific region.

Question 3

Biomass

Accepted Answer

The total mass of living organisms in a defined group or area.

Question 4

Cellular Respiration

Accepted Answer

A process that releases energy from organic molecules, especially carbohydrates, in the presence of oxygen.

Question 5

Community

Accepted Answer

All the populations of the different species that interact in a specific area or ecosystem.

Question 6

Niche

Accepted Answer

The role and function of an organism or species within an ecosystem.

Question 7

Omnivore

Accepted Answer

An organism or species that eats both plants and animal.

Question 8

Sustainable

Accepted Answer

Use of Earths resources, including land and water, at levels that can continue forever.

Question 9

Bioremediation

Accepted Answer

The use of living organisms to clean up contaminated areas naturally.

Question 10

Acidic

Accepted Answer

The level of acidity is very high.

Question 11

Terrestrial

Accepted Answer

An ecosystem that is land based.

Question 12

Equilibrium

Accepted Answer

The balance between opposing forces.

Question 13

Fermentation

Accepted Answer

A process that releases energy from organic molecules, especially carbohydrates, in the absence of oxygen.

Question 14

Competition

Accepted Answer

When two or more organisms compete for the same resource in the same location at the same time.

Question 15

Ecosystem

Accepted Answer

All the interacting parts of a biological community and its environment.

Question 16

Habitat

Accepted Answer

The area in which organisms or species are located.

Question 17

Abiotic

Accepted Answer

The non-living parts of an ecosystem.

Question 18

Producer

Accepted Answer

An organism that can make its own food.

Question 19

Biomagnification

Accepted Answer

A process in which the concentration of ingested toxins increases as it moves from one trophic level to the next.

Question 20

Predation

Accepted Answer

A relationship between two different species in which one species feeds off another.

Question 21

Mutualism

Accepted Answer

A symbiotic relationship between two species in which both species benefit from the relationship.

Question 22

Carrying Capacity

Accepted Answer

The size of a population that can be supported indefinitely by the available resources and services of an ecosystem.

Question 23

Eutrophication

Accepted Answer

A process in which nutrient levels in aquatic ecosystems increase, leading to an increase in the populations of primary producers.

Question 24

Native Species

Accepted Answer

A species that is meant to be at that certain habitat

Question 25

Carnivore

Accepted Answer

An organism that eats only other animals.

Question 26

Biotic

Accepted Answer

The living parts of an ecosystem.

Question 27

Symbiosis

Accepted Answer

Interaction between members of two different species that live together in a close association.

Question 28

Consumer

Accepted Answer

An organism that cannot make its own food, so it eats other organisms to survive.

Question 29

Keystone Species

Accepted Answer

A species that can greatly affect population numbers and the health of an ecosystem.

Question 30

Photosynthesis

Accepted Answer

A process that changes solar energy into chemical energy.

Question 31

Parasite

Accepted Answer

An organism whose niche is dependent on a close association with a larger host organism.

Question 32

Bioaccumulation

Accepted Answer

A process in which an organism ingests materials, especially toxins, faster than it eliminates them.

Question 33

Invasive Species

Accepted Answer

A species that can take over half the habitat of native species or invade their bodies.

Question 34

Dominant Species

Accepted Answer

A species that is so abundant that it has the biggest biomass of any community member.

Question 35

Biosphere

Accepted Answer

The regions of earth where living organisms exist.

Question 36

Herbivore

Accepted Answer

An organism that eats only plants.

Question 37

Trophic Level

Accepted Answer

A category of organisms that is defined by how the organisms gain their energy.

Question 38

Decompose

Accepted Answer

An organism that breaks down nutrients in decaying bodies and wastes of organisms, and returns nutrients to abiotic parts of an ecosystem.

Question 39

Population

Accepted Answer

All the individuals of a species that occupy a particular geographic area at a certain time.

Question	Answer
Alien Species	A species that is accidentally or deliberately introduced to a new location, usually as a result of human activity.
Aquatic
Biodiversity	The number and variety of organisms found in a specific region.
Biomass	The total mass of living organisms in a defined group or area.
Cellular Respiration	A process that releases energy from organic molecules, especially carbohydrates, in the presence of oxygen.
Community	All the populations of the different species that interact in a specific area or ecosystem.
Heterotroph
Niche	The role and function of an organism or species within an ecosystem.
Omnivore	An organism or species that eats both plants and animal.
Sustainable	Use of Earths resources, including land and water, at levels that can continue forever.
Bioremediation	The use of living organisms to clean up contaminated areas naturally.
Acidic	The level of acidity is very high.
Terrestrial	An ecosystem that is land based.
Equilibrium	The balance between opposing forces.
Fermentation	A process that releases energy from organic molecules, especially carbohydrates, in the absence of oxygen.
Competition	When two or more organisms compete for the same resource in the same location at the same time.
Ecosystem	All the interacting parts of a biological community and its environment.
Autotroph
Habitat	The area in which organisms or species are located.
Abiotic	The non-living parts of an ecosystem.
Producer	An organism that can make its own food.
Biomagnification	A process in which the concentration of ingested toxins increases as it moves from one trophic level to the next.
Basic
Predation	A relationship between two different species in which one species feeds off another.
Mutualism	A symbiotic relationship between two species in which both species benefit from the relationship.
Carrying Capacity	The size of a population that can be supported indefinitely by the available resources and services of an ecosystem.
Eutrophication	A process in which nutrient levels in aquatic ecosystems increase, leading to an increase in the populations of primary producers.
Native Species	A species that is meant to be at that certain habitat
Biome
Carnivore	An organism that eats only other animals.
Biotic	The living parts of an ecosystem.
Symbiosis	Interaction between members of two different species that live together in a close association.
Consumer	An organism that cannot make its own food, so it eats other organisms to survive.
Keystone Species	A species that can greatly affect population numbers and the health of an ecosystem.
Photosynthesis	A process that changes solar energy into chemical energy.
Parasite	An organism whose niche is dependent on a close association with a larger host organism.
Bioaccumulation	A process in which an organism ingests materials, especially toxins, faster than it eliminates them.
Invasive Species	A species that can take over half the habitat of native species or invade their bodies.
Dominant Species	A species that is so abundant that it has the biggest biomass of any community member.
Biosphere	The regions of earth where living organisms exist.
Herbivore	An organism that eats only plants.
Trophic Level	A category of organisms that is defined by how the organisms gain their energy.
Decompose	An organism that breaks down nutrients in decaying bodies and wastes of organisms, and returns nutrients to abiotic parts of an ecosystem.
Population	All the individuals of a species that occupy a particular geographic area at a certain time.

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Biology Definitions