11. A Near-Earth Object (NEO) which is made of dust, metal and ice.
A. Comet
b. asteroid
C. meteoroid
d.meteor

12. A Near-Earth Object (NEO) which is rocky and has metals like iron and nickel. a. Comet
b. asteroid
c. star
d, meteor

13. They are remnants or fragments of asteroids, and comets in the outer space. a. comets
b. asteroids
c.colloidy
d. meteoroids

14. A comet that comes closer to sun will- A. explode
B.melt
C. die
D. form a long tail

15. A celestial body or NEO that reaches the Earth's crust.
A. comet
B. meteorite
C. shooting star
D. galaxy​