1A. A scientist conducted an experiment to determine how the amount of salt in a body of water affects the number of plants that can live in the water. In this
experiment the dependent variable is *
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What does resonance result in? quieter sounds frequency amplitude louder sounds

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

Ascience research group is testing a new type of plant food. one trial is conducted in a controlled experiment. the data from the trial show that the plant that received the new food grew faster than the control plant. the group announces that the new plant food makes plants grow faster. what is the main weakness in this scientific claim?