Autotrophs and Hetrotrophs
The answer is D, moist skin surfaces.
Explanation:
Cnidaria and flatworms respirate and extreme through their skin via diffusion.
After taking a shower your outer layer of skin expands and causes wrinkles. In research your skin can absorb water and there's no scientific reason in why your skin doesn't fall apart. The skin has a three-dimensional pattern that acts like a sponge. For more information check out the website, http://www.seeker.com/why-skin-doesn't-dissolve-in-water-discovery-news-1765193325.html
Answer:
B. Traits are consistently conserved from generation to generation
Explanation:
