3rd Grade

Term Definition
organism a living thing
environment all the living and nonliving things that surround an organism
cell the basic building block that makes up all living things
root a plant structure that takes in water and nutrients and holds a plant in place
stem a plant structure that holds a plant up and helps leaves reach sunlight
leaf the plant structure where a plant makes food
photosynthesis the process through which plants make food
shelter a place in which an animal can stay safe
vertebrate an animal with a backbone
invertebrate an animal that does not have a backbone
reptile a vertebrate that has scaly, waterproof skin, breathes air with lungs, and lays eggs
amphibian a vertebrate that spends part of its life in water and part of its life on land
mammal a vertebrate that has hair or fur, is born live, and feeds its young with milk

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