As you drive through mountains, radio stations get harder and harder to hear. This is because the waves must pass through the valleys as they are blocked in by the mountains. This is an example of Question 1 options:

Reflection

Diffraction

Absorbtion

Refraction

diffraction

Explanation:

i dont remember any of these terms so im going off their connotations here

Refraction

Explanation:

Because the waves are not able to go through or pass so they change direction.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

format change of dna.