Place the following events in the correct order of their onset by numbering them from 1 to 5 , beginning with the earliest.
_______a. Climate change, including more extreme weather
_______b. Increase in human population and activities
_______c. Increase in release of $\mathrm{CO}_{2}$ and other greenhouse gases into the atmosphere
______d. Increase in calls to control the production and release of greenhouse gases
_______e. Global warming