When sound waves hit a solid surface they either reflect, refract, or absorb.
Echo's are caused by the reflection of sound waves.
Answer:
These cells have specific types of receptors on their membranes.
The nervous system controls the activity of muscles<span> and glands. ... Which is not a function of the motor </span>division<span> of the nervous system?</span>
After reading the contents of the table shown in the attached picture, I am pretty sure that the <span>statement which is the best interpretation of the material presented in the chart is being shown in the first option: </span><span>Scientific explanations are built by combining evidence that can be observed with what people already know. I choose this option as I recognized sort of 'cause&effect' information. In the first one you can see some well-known facts and in the other picture you can see accurate information gathered by scientists due to those facts.
Hope that helps!</span>
