The scientific discipline in which the relationships among living organisms and the interaction the organisms have with their environments are studied.
What is ECOLOGY
100
Organism that collects energy from sunlight
What is an AUTOTROPH
100
The cycle that diagrams the flow of a specific liquid through an ecosystem.
What is THE WATER CYCLE
100
The lowest level of organization.
What is an ORGANISM
100
Symbiosis where both organisms benefit from the relationship.
What is MUTUALISM
200
The thin layer around Earth that supports life.
What is the BIOSPHERE
200
Organism that gets its energy from consuming other organisms
What is a HETEROTOPH
200
The amount of freshwater on Earth.
What is 3 PERCENT. EXTRA POINTS FOR 2 PERCENT FROZEN IN ICE CAPS AND GLACIERS AND 1 PERCENT USABLE
200
Organisms of a single species that share the same geographic location at the same time.
What is a POPULATION
200
Symbiosis where one organism benefits from the relationship at the expense of the other.
What is PARASITISM
300
Living factors in an organism's environment.
What are BIOTIC FACTORS
300
The three types of heterotrophs that eat living organisms.
What are HERBIVORES, CARNIVORES, OMNIVORES
300
Step in the Carbon Cycle where carbon in dead organic matter deposited in the earth can be returned to the atmosphere.
What is BY BURNING FOSSIL FUELS
300
A group of interacting populations that occupy the same geographic area at the same time.
What is a BIOLOGICAL COMMUNITY
300
Symbiosis where one organism benefits from the relationship and the other neither benefits nor is harmed.
What is COMMENSALISM
400
Nonliving factors in an organism's environment.
What are ABIOTIC FACTORS
400
A model representing the many interconnected food chains and pathways in which energy flows through a group of organisms.
What is a FOOD WEB
400
The capture and conversion of nitrogen into a form that is useable by plants
What is NITROGEN FIXATION
400
A biological community and all of the abiotic factors that affect it.
What is an ECOSYSTEM
400
Symbiosis between a heart worm and a dog.
What is PARASITISM
500
The role or position that an organism has in its environment.
What is a NICHE
500
Each step in a food chain or food web. Ecological pyramids also diagram the relative amounts of energy, biomass or number of organisms at each of these steps.
What is a TROPHIC LEVEL
500
This step in the water cycle involves plants losing water from their leaves to the atmosphere.
What is TRANSPIRATION
500
A large group of ecosystems that share the same climate and have similar types of communities.