Which of the following is an example of Genetic Engineering? A. Raising pure breeds of dogs.
B. Mating the most productive plants together so their offspring will have a high yield.
C. Altering the chemical structure of alloys to create better characteristics.
D. Altering the DNA of yeast to create vaccines.

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.

The climate on the leeward side of a mountain differs from that on the windward side mostly in

An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil