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. The most important ore of Aluminium is
  2. Which of the following is in liquid form at room temperature ?
  3. Which of the following is most likely to cause a rise in the average temperature of earth's atmosphere…
  4. The recent atomic weight scale is based on
  5. The Panda belongs to the same family as that of
  6. The colour of Emerald is
  7. One fathom is equal to
  8. Old-written material, which cannot be read easily can be read by
  9. Rust is
  10. The speed of light with the rise in the temperature of the medium
  11. The solar eclipse occurs when
  12. The oxide of Nitrogen used in medicine as anaesthetic is
  13. The fastest-running terrestrial animal is
  14. Liquefied Petroleum gas (LPG) consists of mainly
  15. Glass is made from the mixture of
  16. Which of the following parts of the sun is easily visible only during a total solar eclipse?
  17. Polythene is industrially prepared by the polymerisation of
  18. The accumulation of stress along the boundaries of lithospheric plates results in which of the following?
  19. In an atomic nucleus, neutrons and protons are held together by
  20. Which of the following elements is a metal
  21. In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If…
  22. The intencity of Earthquakes is measured on
  23. Permanent hardness of water can be removed by adding
  24. The property of a substance to absorb moisture from the air on exposure is called
  25. Nitrification means
  26. Cell membrane is
  27. Which of the following elements is non-radioactive?
  28. The fastest acting enzyme in the biological kingdom is
  29. Lightening cause rainfall because
  30. Brass gets discoloured in air due to the presence of which gas in air