Question

a. 23
a. pupil
C. cornea
2. The backbone is made
up
of
small bones, called vertebrae.
b. 13
c. 33
d. 10
3. This looks like a black spot, through which light enters the lens.
b. iris
d. eyeball
4. It is the vibration transmitted through a solid, liquid or gas.
b. electricity
c. light
d. wind
5. In this process, impure water is heated till it starts boiling.
a. distillation
b. sedimentation c. chlorination
d. filtration
a. sound​

Answer 1

Answer:

33,iris,electricity,distillation