Question

Name the following.
1. A kind of igneous rock used as building material
2. The gas used to fill food packages
3. A substance that changes colour when added to acids or bases
4. The carrying away of soil by wind and water
5. The fixed point about which a lever moves
6. The flaps of skin in the throat that vibrate to produce sound
7. A factory in which petroleum is purified​

Answer 1

Answer:

1.for fjdsdkxzndsfkszbdzmsk

Explanation:

mfhldxnjdvkrgk