Question

1.
brain
a.
excretory system
2. kidney
b. respiratory system
3.
heart
C.
nervous system
4.
trachea
d. skeletal system
circulatory system
5.
small intestine
e.
6.
skull
f. digestive system​

Answer 1

Answer:

Explanation: This is not a proper question to ask? You haven't mentioned what to do in this.