If the greenhouse effect or global warming remains unchecked, it alter:
Correct option is D. temperature
Global warming is caused by the release of greenhouse gases such as carbon dioxide into the atmosphere. Greenhouse gases warm the atmosphere that increases temperature and can cause other effects such as the sea-level rise and changes in rainfall and storminess. Current levels of greenhouse gases in the atmosphere are unprecedentedly high.
$$\mathbf{Hence\ the\ correct\ answer\ is\ option\ ((A)\ (C)\ and\ (D))}$$