A donkey and a horse are considered separate species. They can mate, making a animal called a mule, but mules are sterile and cannot mate.
Because their offspring can't make donkeys and horses are separated by
O gametic isolation.
O reduced hybrid viability.
O mechanical isolation.
O reduced hybrid fertility.

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 of the following is true of metabolism in its entirety in all organisms? a) metabolism depends on a constant supply of energy from food. b) metabolism uses all of an organism's resources. c) metabolism consists of all the energy transformation reactions in an organism. d) metabolism manages the increase of entropy in an organism.

Drag the tiles to the correct boxes to complete the pairs. match each cell organelle with its description.