Answer:
The nitrogen gas must be changed to a form called nitrates, which plants can absorb through their roots. The process of changing nitrogen gas to nitrates is called nitrogen fixation. It is carried out by nitrogen-fixing bacteria. The bacteria live in soil and roots of legumes, such as peas.
The ozone layer is a stratospheric region composed of Ozone (Triatomic Oxygen)
CFC´s (Chlorofluorcarbons) are broken down by ultraviolet radioation to release chloride ions wich react with ozone breaking it down into oxygen.
One chlorine atom can destroy 100.000 ozone molecules - smallamounts of CFC can break down large amounts of ozone.
The thinning of the ozone layer by CFCs reduces the absorption of UV light in the stratosphere
The best answer to go with is b you’re welcome