The answer is Wetland and Stream
I think the correct answer is C
If your in a city, go inside a building immediately. most buildings have lightening rod, so the lightening voltage won't hit on you.
if you're in an open area, don't go under a tree, or it'll hit you and the tree, even if it doesn't hit you, you still cannot take the impact by the exploding tree. leave the water or metal bicycle or stuff that conducts electricity.
Answer:
The first ionization energy for K is less than Ca because Ca has a larger effective nuclear charge.
