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scientist


SYE-un-tist

a person who studies nature and the world

  scientist

observe


uhb-ZURV

to watch someone or something carefully

  observe

chlorophyll


KLOR-uh-fil

the green substance in plants that uses light to make food

chlorophyll

nutrients


NOO-tree-uhnts

something that is needed by people, animals, or plants to stay strong and healthy

nutrients

measure


MEZH-ur

to find out the size, length, weight, temperature, volume, etc. of something

  measure

classify


KLASS-uh-fye

to put things in groups based on their characteristics or traits

  classify
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