Identifying sources used to study earth's interior
which sources do scientists use to study the interior of earth? check all that apply.
earth's orbit
core samples
sea level
earthquakes
s waves
rock composition
tivity

The answer is Core Samples, Earthquakes, S waves, and Rock composition.

Explanation:

It’s talking about study the whole interior of Earth not just one part el to learn about the Earth they have to study the rocks. The waves allow us to know whether or not the the outer core is liquid I believe. The Earthquakes shake the Earth allowing us to get new rocks. Rock composition helps us to be able to know what our old Earth was like and when they were deposited. And Core samples allow to be able to see the temperature of the core and such things.

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .