1. What is receptor

2. Which factor affects the soulbality of substances

3. The animals which kill and hunt other animals for food called

4. The biotic components of the environment Include..............

5. A solution consisting of two substances is called

6. The particles are settled down at the bottom of the container.

7. The main components of environment are

8. Matter consisting of one kind of atoms is called

9. How Many types of mixture

10. The number of naturally occurring elements is

11. The protective layer of leaf is called

12. America launched its first space station skylab into space in

13. Ability to do work is called

14. The energy in an object due its pissition is called

15. .................. is used in electric bulbs and flourescent lamps

16. ................. Cell has only one large vacule

17. The part of the solution which is less in quantity called

18. A spherical mirror whose inner surface is reflecting is called

19. Meteoroid which burns after entering earth's atmosphere is called

20. Gear system is an advanced shape of

21. The energy in an object due its motion is called

22. ....................... Is a friendly relationship between two organisms

23. The structural and functional unit of life is called ....................

24. Air contain.................. Nitrogen

25. The speed of sound is........... Meter per second in iron

26. Olfactory nerves links....... and...........

27. Which of the following is not detected by skin?

28. Which gass is used in photosynthesis?

29. Which substance is called universal solvent

30. Air contains 0.03%...........