Astudent conducts an experiment to determine how the amount of water given to a plant affects its growth.
what is the independent variable for this experiment?
a. the amount of water
b. the height of the plant
c. the amount of sunlight
d. the amount of soil

The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed

Explain the causes and effect of damage to the genetic code.

Which of the following statements accurately defines epidermis? a. a thick protein fiber composed of the protein collagen b. hard, dense bone tissue found on the outer surface of a bone c. single layer of epithelial cells and the underlying basal lamina d. outer, protective layer of the skin composed of stratified squamous keratinized epithelial tissue