Consider the following statements:
1. The Greenhouse Effect is only a manmade phenomenon.
2. It has been happening on earth for millions of years.
3. The natural greenhouse effect happens due to water vapour and particles of water present in the atmosphere.
4. This phenomenon has enabled life to emerge on land from the oceans.
Which of the above statement is correct?
1
1 and 2 only
2
2 and 3 only
3
1, 2 and 4 only
4
2, 3 and 4 only
5
Answer Not Known