Which statement best summarizes the presence of greenhouse gases in the atmosphere? (1 point)
The atmosphere is mostly non-greenhouse gases, but the small amount of greenhouse gases
have a large impact on climate.
The atmosphere has recently changed and is mostly greenhouse gases, which have a large
impact on climate.
The atmosphere is mostly non-greenhouse gases, so the small amount of greenhouse gases
have little impact on climate.
The atmosphere has recently changed and is mostly greenhouse gases, but they have little
impact on climate.