4. The following animals have an ability to camouflage themselves from its environment, except _________.

6. Which type of soil that contains nutrients that helps most of the plants to grow healthy?

7. When is the best time to prepare an emergency kit?

8. When does evaporation take place?

9. A material having a density greater than 1g/cm³ like will ___________.

10. The ability of a liquid to pass through narrow spaces is called _______.

11. Which of the following is an example of useful changes in the environment?

12. Which is the best way to dispose of biodegradable waste materials?

13. Which of the following sounds produces high-pitched sounds?

14. It refers to the condition of the atmosphere or the layer of air around us and refers to short term atmospheric conditions.

15. What instrument is used for measuring the air pressure?

16. How does light travel?

17. If you are going to exercise every morning, which of the following absorbent materials are you going to use to wipe off the sweat in your body?

18. Which of the following materials are you going to use if you want to place a hot pot away from the stove to serve it on the table?

19. You can feel the heat of a campfire when you sit nearby. This is an example of which heat transfer?

20. If you’re going to build an aquarium, which type of materials in terms of the properties of light that pass through materials is best to use?