The quote states that we should be using solar energy before our limited amount of naturally occurring oil and coal runs out. Meaning; we should be proactively working towards solar power rather than to wait for our resource to run out to start.
~Hello there!
Your question: Which climate type normally has the largest annual range in temperature?
Your answer: Subpolar climates is the type of climate that normally has the largest annual range in temperature.
Any questions ^?
Happy Studying!
Yes the capital of Minnesota is Saint Paul