What is it ?
climate
What is it ?
a blizzard
What is it ?
a forest fire
What is it ?
wind turbines
What is it ?
carbon footprint
What is it ?
sunspots
What is it ?
solar panels
What is it ?
a drought
What is it ?
water pollution
What is it ?
a flood
What is it ?
a volcano
What is it ?
nuclear power
What is it ?
air pollution