Answer:
The answer is C
Explanation:
S only travels in solid's while P travels in both, the outer core is a liquid there for it would be C.
<span>Human genetics is the study of inheritance as it occurs in human beings. Human genetics encompasses a variety of overlapping fields including: classical genetics, cytogenetics, molecular genetics, biochemical genetics, genomics, population genetics, developmental genetics, clinical genetics, and genetic counseling.</span>
<em>The two main process by which plant cells absorb, release, and use energy are Photosynthesis and respiration.</em>
