made of only one cell; can carry out all basic life processes (move, find food, grow, reproduce) ex: bacteria, amoeba

a living thing made of one or more cells; cells have different jobs

a characteristic a living thing gets from its parents (ex: eye, color, height, dimples)

a characteristic that a living thing develops after it is born (ex: speaking, reading, scars)

a model that shows the amount of energy that passes from one organism to the next in a food chain or web

several food chains that hook together in an ecosystem

path of energy from one living thing to the next; beginning with a producer

a living thing that gets energy by breaking down dead materials

consumers that eat secondary consumers

consumers that eat only animals

consumers that eat both plants and animals

consumers that eat only plants

living things that get energy by eating

living things that make their own food through photosynthesis (plants)

water-based ecosystems (lakes, ponds, oceans, estuaries)

an area made of living and nonliving things

ecosystems on land (forest, grassland, deserts)

nonliving things in an ecosystem

living things in an ecosystem

animals that hunt for other animals

animals that are hunted

the demand for a resource (like food or water) by two or more organisms

ecosystems that have the same characteristics, normally determined by how close they are to the equator

biome with a 4 equal seasons, leaves fall of trees

biome that stays the same temperature year round, closest to the equator; lot of precipitation

biome that has lots of grasses but very few trees

biome that is very dry and does not have a lot of precipitation or bodies of water

biome that is the furthest north; very cold most of the year, but has a short summer. Layer of permafrost beneath the soil

biome that has coniferous trees, forest that is the furthest away from the equator and therefore is the coldest

aquatic ecosystem with brackish water (a mixture of fresh and saltwater)

oceans and salt marshes; water is salty

lakes, ponds, river, streams; water contains no salt