Question

Fill in the blanks.

1.) _____ refer to the things that exist freely in nature for human use.

2.) During ______ period, Earth was covered with swampy forests.

3.) _____ is used to generate powder and to manufacture other fuels like coke and coal tar.

4.) ______ is a mixture of hydrogen, methane, carbon monoxide and other gases.

5.) Natural gas mainly consists of _______.

6.) _______ are the chemicals derived from petroleum and natural gas.

7.) The process of refining of petroleum is carried out in refineries and is called _____.​

Answer 1

Explanation:

1. Air , water renewable resources
2. Carboniferous period
3. I think coal and petroleum
4. Coal gas I think
5. Methane will be the correct answer
6. Petrochemicals will be the correct answer
7. It will be Petroleum Refining.

Hope my answer would be helpful to you