Answer:
Ο Α.
Sensory receptors in the skin detect the stimuli from the environment.
Explanation:
Simple process of elimination. Keratin is what makes up hair and nails. Muscles cannot detect temperature change, and connective tissue can't either. The sensory receptors that detect heat and cold are called thermoreceptors
There are three sources of genetic variation: mutation, gene flow, and sexual reproduction. A mutation is simply a change in the DNA.
Answer:do you do
The first line of defense involves which structure(s)?
Explanation:
