| A | B |
|---|
| energy flow | comes from living things |
| energy from the sun | begins from the sun is a physical environment |
| using energy | this step involves green plants |
| receving energy | animals receive energy by eating plants |
| consumers | a living thing that eats other living things |
| herbivor | an animal that eats only plants |
| carnivors | an animal that eats other animals |
| omnivors | an animal that eats both plants and other animals |
| decomposers | a living thing that feeds on dead materials,breaking them down and returnig the materials to the environment |
| food chains and food webs | are all an impotant partin the |
| food chain | the arrangement of living things in an order |
| food chain | the arranment of livig things in an order in which each uses the next as a source of food |
| food web | a combination of all the food chains in an ecosystem |
| food pyramids | a diagram show how the amount of food energy available changes at each step of the food chain |
| limiting factor | a factor that entraits the number of living things that an ecosystem can supporrt |
| carrying capcivity | the maximum number of living things that a given ecosystems can support without days to the suvival of the living things |
| cycles | the movment of resources in an ecosystems that result in materials being used againand again |
| balance in a ecosystem | look around your classroom the number of students that can be taught in the classroom is limited by factors such as the size of the room and the resource in the room |
| amount of food | the difference in the sizes of population shown in the picture are due to the amount of food energy available to each population the population with thr largest amount of food energy available to them are the smallest |
| number of organizems | plants form the base of the food pyramid they make their own food by using energy from sunlight water air and chemical |
| water cycle | you may now that the cycling of water in the environment is k nownas the water cycle |
