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
certain hydrogen bonds are formed so that A goes with T and G with C
C bc the key word is replaced
A. Titanium. Titanium's atomic weight is 47.867
