One possible result of the addition of carbon dioxide to the atmosphere is an increase in cloudcover, which, in turn, could partly offset a global temperature increase.a.true b.false

False

Explanation:

The increase in cloud-cover occurs with introduction of larger amounts of aerosols into the atmosphere. The increased amounts of carbon dioxide into the atmosphere will result in an increase of the greenhouse effect. Basically, the carbon dioxide is a greenhouse gas, having properties that enable it to trap the heat into the Earth's atmosphere. By doing so, the carbon dioxide will contribute to warmer atmosphere, thus warmer global climate. The effect of it will be that the Earth will have rise in the temperatures on global scale. The ice sheets will mostly melt, resulting in sea level rise. The rise of the sea levels will mean more ocean water, and less land, which in turn will create climate conditions that will be warm and wet in most of the planet.

They broke the hydrogen bond and this was the way Watson and Crick determined the base pairing. The correct option among all the options that are given in the question is the third option. Both Watson and Crick together discovered the double helix. I hope the answer comes to your help.