WEST-E Biology (NES 305) Practice Questions - NES Biology (305) For Washington Educator Endorsement Exam

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A teacher asks whether adding compost changes the height of bean plants over four weeks. Which variable should students deliberately manipulate?

The amount of compost added to each pot The height of each plant after four weeks The species of bean planted in each pot The volume of water given to every pot

Correct Answer:

The amount of compost added to each pot

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