Beautiful clouds and sunset near Houston, Texas

As I was driving towards Brazos Bend State Park near Houston, Texas, I observed beautiful clouds and a beautiful sunset.  It looks like it could rain, but due to the current drought state in Texas, I won't believe it til I see it.   Our planet provides us with resources animals and plants need to survive on this planet.   What are the valuable  resources necessary for life?   Can you name some?   Please use comment section to let me know what your answers are.   Maybe you've thought of some resources that I've not considered?   Can we live without rain?   What are impacts from no rain?