healthy ecosystems
An micro-organism
What is a living thing that is very small and must be viewed with a microscope
An omnivore
what is an organism that eats both plants and animals
A native species
What is a species that occurs in their natural area
A food chain
What is a sequence that shows how energy and nutrients are transferred from one organism to another in an ecosystem
A insvasive species
What is a species that has been introduced into an area where it did not live before
A producer
What is an organism that makes its own food from non-living materials
what is mutualism
An interaction between individuals of different species that benefits both individuals
A secondary succession
What is a succession that develops a community in an area after it has been disturbed
An herbivore
what is an organism that eats only plants
ecology
What is the study of relationships between organisms and their environment
An abiotic element
what is any non-living component of the environment
A decomposer
what is an organism that consumes and breaks down dead organisms or waste
A pyramid of numbers
What is a model that shows the individuals at each level in a food chain or food web
a scavenger
what is an organism that eats already dead animals
nutrient
What is a substance that an organism need to grow and maintain its body
A biotic element
what is any living thing found in the environment
A consumer
What is an organism that eats other living things for energy
A competition
What is when more than one organism tries to obtain the same basic resources in the same habitat
A population
What is a group of organisms of the same species in a given area
A community
What is a group of populations of different species in a givein area
A carnivore
What is an organism that only eats meat
A steward
What is a person who carefully manages a resource by taking responsibility for their actions and educating others
A closed system
What is a system in which the amount of matter remains the constant over time
A succession
What is a series of gradual changes that results in replacement of one community of plants or animals by another
A detrivore
What is an organism that eats large parts of decaying plant and animal