15 terms
chapter 4 ecosystems grade 5
ecosystem
made up of all the living and nonliving things that interact in one place.
habitat
a place that provides all the things the organism needs to survive
population
a group of organisms of one species that live in one area at a time
community
the group of all populations in an area
competition
the struggle among organisms for the same limited resources
conservation
an attempt to preserve or protect an environment from harmful changes
consumer
an organism that can not make its own food
decomposer
an organism that gets its energy by breaking down wastes and dead organisms
environment
all the conditions surrounding and organism
food chain
a series of steps by which energy moves from one type of living thing to another
food web
a diagram that combines many food chains into one picture
pollution
any substance that damages the environment
predator
a consumer that hunts and eats another animal
prey
any animal that is hunted by others for food
producer
an organism that makes its own food for energy