The article states that 1,200,000 people have died worldwide and 250,000 have died in the U. S. What percentage of people have died from
the U. S. when compared to the world? *

20.83% of US people would have died compared to the world.

the answer to your question is:

c. complementary base-pairing

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.