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15 questions
A scientist working with wolves records the different sounds they make, such as howling. He proposes that wolves use these sounds to communicate with members of the pack. What CLAIM is the scientist making?
wolves make different kinds of sounds
The scientist sets up an experiment where he records the sounds of puppies whining. When he plays the sound, the mother comes to investigate. What is the manipulated (independent) variable in the experiment?
how much it weighs
where it lives
what color it is
what it eats
An experiment measures the effect of fertilizer on plant growth. What is the dependent variable?
type of fertilizer
height of plant
amount of water
color of flower
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