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Chapter 1 Science Review

bacteriathe oldest living and most numerous organisms
vascularhaving tubes or channels
vertebrateanimals with a backbone
nonvascularwithout tubes or channels
organisma living thing
invertebrateanimal without a backbone
protistsalgae and protozoans
microscopicto small to be seen with the eye alone
cellsbuilding blocks of life
nucleuspart that controls all the functions of a cell
bacteria cellshave no nucleus

Fourth Grade Teacher
East Dale Elementary
Fairmont, WV

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