Why is sweat a good coolant for the body?

a. the arterioles that transfer water to sweat move closer to the skin surface when it is hot.

b. breaking h bonds between water molecules in sweat requires energy from body heat.

c. sweat contains minerals such as sodium chloride.

d. sweat is non-polar?

format change of dna.  

lunar landing mission. apollo 11 was the first manned mission to land on the moon. the first steps by humans on another planetary body were taken by neil armstrong and buzz aldrin on july 20, 1969. the astronauts also returned to earth the first samples from another planetary body.

explanation:

her next move would be to use agarose gel electrophoresis to separate the dna molecules of varying length and create a dna fingerprint.