Answer:
It's like the skin
Explanation:
Epi- outer layer
Dermis- Skin
It protects the more fragile layers underneath like how our skin protects our body from pathogens.
Answer:
carbon dioxide, salts, urea, and uric acid
Nucleic acids / aka nucleotides
Question 2 is false because it is always opposite.
Question 3 Ionic charge in which valence electrons are lost from one atom and gained by another one hoped it helped.