a component of air that plants use to make sugar and that plants and animals breathe out

a consumer that eats other animals

an organism that gets energy by eating other organisms.  There are four types:  herbivores, carnivores, omnivores and decomposers

an organism that gets energy by feeding on dead materials and wastes

all the living and nonliving things that interact with each other in an environment

what is stored in food that fuels living things to carry out all of their needs

an experiment in which only one variable is changed and all others are kept constant

the transfer of food energy from one organism to another in an ecosystem

overlapping food chains with different pathways for the transfer of food energy in an ecosystem 

a group of living things, including mold, mushrooms, and yeast which aid in decomposition

a consumer that eats only plants or plant parts

a part of soil that is rich with nutrients that plants need to grow

a unit that measures the amount of energy stored in a food 

the amount of matter something has

everything in the universe that is made of physical materials and takes up space

a consumer that eats both plants and animals

a component of air that animals and people breathe in and plants release into the air during photosynthesis

the process of using the energy in sunlight to make food from water and carbon dioxide

an organism that can make its own food using photosynthesis

is a material on the ground of many things, including rocks, sand, living organisms, matter from dead organisms, and water

a factor or thing that can change in an experiment

matter released from an organism in the form of gas, liquid, or solid

Which of the following is an example of a food chain?

What is the main purpose of photosynthesis in plants?