everything that surrounds a living thing

gradual change in organisms that occurs when the environment changes

bacteria that can use nitrogen in soil to make nitrogen compounds

group of the same kind of organism living in a certain place

to act upon each other

organisms that eat secondary consumers and are found in the third level of consumers of food pyramid (whale)

an organisms that make their own food through the process of photosynthesis

organisms that eat other organism

animal that eats only dead organisms

reaction to a change

basic unit of structure and function in living things

animal that hunts and eats other animals

organisms that ONLY eat producers(plants)

a chain of organisms in which each link feeds on the one ahead and is eaten by the one behind

large region of the earth with particular plant and animal communities

release of harmful materials into the environment

organisms that eat secondary consumers (like a human or shark)

reaction to a change

place where an organism lives

organisms that obtain food by eating other organisms

all populations that live in a certain place

way of showing how food chains are related

living and nonliving things in an environment, together with their interactions

area where a type of animal or plant population is found

organisms that eat both producers and consumers

process of breaking down food so that it can be used by living things

something that happens over and over in the same way

the chemical process by which carbon dioxide and water are converted into carbohydrates

organisms that eat primary consumers and are found on the second level of consumers in food pyramid

A diagram that displays the food relationships among the organisms within an ecosystem

organism's role, or job, in its habitat

organism that breaks down the wastes or remains of other organisms

conditions in the environment that put limits on where an organism can live

way of showing how energy moves through a food chain

organisms that eat the remains of dead organisms

trait of a living thing that helps it live in its environment

Everything that surrounds a living thing

process of moving nutrients and wastes in a living thing