Naturally ocurring, solid,inorganic, Crystal shape, and definite chemical composition.
Answer:
False.. the brain is part of the nervous system... thats the circulmatory sytem job..
Explanation:
14. Dermis
15. Chemical
17. Virus
18. Antibodies
19. Gas exchange
20. Ligament
Hope this helps!
D) each parent passes only one factor for each trait to its offspring