11. What layer of the atmosphere closest to the earth's surface?

A. troposphere
B. stratosphere
C. mesosphere
D. exosphere

12. Which of the following resource categories are came from minerals?

A. rice and vegetables
B. water and air
C. milk and rubber
D. jewelries and aluminum

13. Which of the following activities that can cause destruction of Earth's resources?

A. illegal logging
B. illegal squatting
C. using recyclable container
D. planting tress

14. Which of the following activities that you should avoid to reduce the amount of garbage at home?

A. Make a compost for biodegradable waste
B. Always use plastic cups and paper plates
C. Bring eco bag when going to market.
D. Practice reuse, reduce and recycle at home

15. Which of the following are best practices of sustaining the Earth's natural resources?

A. Use nonbiodegradable container
B. Volunteer for clean-up dives
C. Reduce,reuse, recycle
D. Plant a tree

16. Which of the following activities of man that will contribute to global warming?

A. Burning of plastics and rubbers
B. Indescriminate hunting of animals
C. Reforestation
D. Use of renewable energy

17. Which of the following definitions below describe about natural resources?

A. something you do for others
B. source of food
C. resources we got from our home
D. resources we got from nature

18. As students, which of the following you can do at home to help reduce the effects of human activities on natural resources?

A. Plant trees in areas affected by illegal logging
B. Conserve water
C. segregate biodegradable from
nonbiodegradable waste
D. Join clean- up drives ​