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Organisms that are able to make their own food.
Producers
Both the living and non-living things in an environment along with the interactions among them.
Ecosystem
Diagram that shows the interconnected network of food chains within a ecosystem.
Food Web
An estimate of the biological mass in an ecosystem.
Biomass
Process by which viruses reproduce.
Viral replication
Organisms that must eat other organisms to obtain food.
Consumer
Diagram that shows the energy loss among the trophic levels in an ecosystem.
Energy pyramid
The continuous movement of water through the environment and living things.
Water cycle
Any trait that improves an organism’s chance for survival and reproduction.
Adaptation
Term for all the interacting populations of organisms that share an ecosystem.
Community
Each feeding level in an ecosystem.
Trophic Level
A medicine that contains dead or weakened forms of a pathogen.
Vaccine
Primary consumers that feed only on plants.
Herbivores
An organism that lives on or in another organism.
Parasite
Single-celled prokaryotes that can be controlled by using antibiotics. (Most numerous organisms on earth)
Bacteria
Occurs when there are no longer any living members of a species on earth.
Extinction
Environmental conditions that limit the size of a population.
Limiting factors
A symbiotic relationship in which one organism benefits and the other neither benefits or is harmed.
Commensalism
The organism that is affected by a parasite.
Host
All the members of a species that live in the same area at the same time.
Population
Secondary & tertiary consumers that feed only on animals.
Carnivores
Body parts that have a similar function, but not a similar structure.
Analogous structures
Vascular tissue that carries food down to other plant structures.
Phloem
Process by which species of organisms change over time.
Evolution
Scientific theory that explains the process of evolution.
Natural Selection