living things in an ecosystem
nonliving things in an ecosystem
an area made of living and nonliving things
ecosystems on land (forest, grasslands, deserts)
water-based ecosystems (lakes, ponds, oceans, estuaries)
living things that make their own food throughout photosynthesis (plants)
living things that get energy by eating
consumers that eat only plants
consumers that eat both plants and animals
consumers that eat only animals
consumers that eat secondary consumers
a living thing that gets energy by breaking down dead materials
path of energy from one living thing to the next; beginning with a producer
several food chains that hook together in an ecosystem
a model that shows the amount of energy that passes from one organism to the next in a food chain or web*
animals that hunt for other animals
animals that are hunted
the demand for a resource (like food or water) by two or more organisms
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