Answer:
The hair shaft is comprised of three layers: the cuticle, cortex, and medulla.
Explanation:
Petrochemicals include many things, I would say All of the above. Hope this helped! :)
Answer is D bra, I just guessed and got it right.
Answer:
Selective breeding involves choosing parents with particular characteristics to breed together and produce offspring with more desirable characteristics. Humans have selectively bred plants and animals for thousands of years including: crop plants with better yields.
Explanation:
Hope that helps
