Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere because of

Which of the statements given above is/are correct?

• A.
  
  1 and 2
• B.
  2 only
• C.
  2 and 3
• D.
  
  3 only

Answer 1

The correct option is C

2 and 3
<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Phytoplankton are a very important part of the ocean foodchain. They make their own food by photosynthesis for which they utilize atmospheric carbon dioxide.

Trapping of carbon dioxide on polar ice caps is not known. Also, carbon dioxide does not escape into the stratosphere.