Earth's seasons are caused by which of the following?

A. The varying amount of sunspot activity

B. The tilt of the earth's rotation relative to the ecliptic as earth revolves around the sun

C. The earth's orbit around the sun as an exlipse rather than a circle

D. The rotation of during a 24-hour day

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Apparatus invented by Archimedes is :
  2. The metal used in storage batteries
  3. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
  4. When a gas is turned into a liquid, the process is called
  5. Which of the following is commonly called a polyamide ?
  6. According to Daltons atomic theory the smallest particle which can exist independently is
  7. Nitrification means
  8. The type of glass used in making prisms and lenses is
  9. Brass gets discoloured in air due to the presence of which gas in air
  10. Old-written material, which cannot be read easily can be read by
  11. Pollination by birds is called
  12. The chemial name of Uria is
  13. Polythene is industrially prepared by the polymerisation of
  14. Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
  15. Earth's seasons are caused by which of the following?
  16. The metallic constituents of hard water are
  17. Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of
  18. The removal of top soil by water or wind is called
  19. The smallest functional and structural unit of kidney is called as
  20. Water has maximum density at
  21. In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
  22. The most important ore of Aluminium is
  23. The formula of Plaster of Paris is
  24. Rust is
  25. Permanent hardness of water can be removed by adding
  26. Which of the following is the lightest metal ?
  27. The major ingredient of leather is
  28. The solar eclipse occurs when
  29. The intencity of Earthquakes is measured on
  30. The metal that is present in Photo Films is