Green house effect is the trapping of heat by some gases ! mainly in our earth this is increasing due to CO2 !
Our Sun rotates about the center of our Galaxy at 1000 years that is the answer to <span>What is the period of the Sun's orbital motion about the center of the Galaxy 1</span>000 years
The north end of Earth's axis is tilted toward the sun from March 21 until
September 21 ... Spring and Summer in the northern hemisphere, which
includes North America.
Then the four seasonal periods will be twice as long as they are now.
