When energy is transferred within a closed system...
O A. some energy is lost.
OB. no energy is lost or gained.
OC. energy is both lost and gained.
OD. some energy is gained.

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.

Which layer will become saturated first when rain falls?

Which phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?