Question

fast................

Answer 1

 
:-) 2 to 4
:-) saliva is produced in the mouth from salivary glands.
:-) respiration is the process in which we take in air and it is used to make energy.
:-) 4th don't know .
7:-) it is backbone.
:-) it is called fertilisation.
6:-) the main organs of nervous system r-
arteries ,veins,and heart .

hope this will help you

Answer 2

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1.0 to 4.

2.saliva is produced in mouth from Salivary glands.

3.respiration is the process in which we take in oxygen and energy is evolved.

6.heart,nerves and arteries.

7.Backbone.

8.fertilisation.