Calvert Science 3rd grade Block 140 test words
Terms
undefined, object
copy deck
- host
- the organism a patrasite lives in or on
- natural resource
- a material on Earth that is necessary or usefull to people
- renewable resource
- a resource that can be replaced or used over and over again.
- nonrenewable resource
- a resource that cannot be reused or replaced in a useful amount of time
- pollution
- what happens when harmful substances get into water, air or land
- reduce
- to make less of something
- reuse
- to use something again
- recycle
- to treat something so it can be used again
- ecosystem
- all the living and nonliving things in an environment
- community
- all the living things in an ecosystem
- population
- all the members of a certain type of living thing in an area
- habitat
- a place where a plant or animal naturally lives and grows
- producer
- an organism that makes its own food
- consumer
- an organism that eats producers or other consumers
- food chain
- a series of organisms tha depend on one another for food
- decomposer
- an organism that breaks down dead plant and animal material
- food web
- several food chains that are connected
- energy pyramid
- a diagram that shows how energy is used in an ecosystem
- carbon dioxide and oxygen cycle
- the exchange of gases between producers and consumers
- parasite
- an organism that lives in or on another organism