Answer:
a. veins and arteries
b.diaphragm
c.kidney
d.lung
e.4
f.left auricle(atrium) , right auricle(atrium)
g.left ventricle, right ventricle
h.blood plasma
i.digestive
j.buccal cavity ,saliva
k.bile
l.excretory
m.kidneys
Explanation:
This is the integumentary system which is also your skin system
I think it is A
Hope my answer help you?!
Tell me of wrong or no?
Answer:
B 20 amino acids, hundreds of proteins
Explanation:
I hope this helped :)