11. 1961-1990 relative to global mean surface heat is different from 12. If you want to heat a room in extreme cold weather, set it instant on heating on higher degree. 13. If you want to heat a room in extreme cold weather, set it instant on heating on higher degree. 14. You can use a specially made metal sheet to avoid wasting heat. 15. A cow comes into heat every 19 to 21 days . 16. The heat period in goats lasts from one to three days in summer . 17. The sun climbed to the mid-sky and the heat was great . 18. It heats up for about 30 minutes, cools for an hour. 19. heating with firework and washing like that.20. The duration of the heat period is 18 to 36 hours .
