Studies indicate that periods of low sunspot activity, like the correspond to unusually cold climate conditions.

The answer is the Maunder Minimum, better known as the "prolonged sunspot minimum", is the title used for the era beginning in about 1645 and ongoing to around 1715 when sunspots turn out to be exceptionally rare, as distinguished by solar bystanders of the time.

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

the force on the thing and the distance the force moves the thing