True! because if you have more than one variable, you aren’t going to know which variable changed the dependent variable.
In order to reproduce, female sex cells must be fertilized by A. Sperm.
Gallons. You buy gasoline by the gallon.
Answer:
collects a multitude of sensory information; process, interpret, and integrate that information; and initiate appropriate responses throughout the body.
nerve cell or neuron
Explanation: