What theory refers to the idea that all matter is made of small units of matter that are made of a nucleus, orbited by electrons, and combine to form various
substances?

What feature of cell theory is best demonstrated in the image

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.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?