Is reproduction important to the survival of an individual? why would you say that living things reproduce if some individual living things may not reproduce?

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine