4th Grade Science Module 1-Living Things Need Energy

environment

 - 

everything that surrounds a living thing

, 

biomass

 - 

living things in an environment

, 

plants

 - 

living things that have roots, stems, and leaves

, 

photosynthesis

 - 

food energy from sunlight, water and carbon dioxide

producers

 - 

green plants in a food chain

, 

consumers

 - 

animals are called this

, 

food chain

 - 

shows how energy passes from one organism to another

, 

decomposers

 - 

break down organisms and return nutrients to soil

, 

herbivores

 - 

eat mainly plants

competition

 - 

the struggle for the same resource

, 

population

 - 

all members of one type of organism in an environment

, 

energy pyramid

 - 

shows how much energy flows through a food web

bacteria

 - 

small microorganisms and can be helpful and harmful to ppeople

, 

protists

 - 

some eat bacteria to keep them under control.

, 

amoeba

 - 

a protist that acts like an animal

, 

algae

 - 

produces that live in water

, 

euglena

 - 

protists found in ponds and streams