The most efficient form of locomotion in the animal kingdom is
A) a human walking.
B) a human on a bicycle.
C) a propeller-driven airplane.
D) a bird flying.
E) railroad trains.
Question 2
One way to describe the allowed matter fields for an isolated hydrogen atom is that they are
A) the electromagnetic fields that can be produced by the orbiting electron.
B) the various possible elliptical shapes for the orbit of the electron.
C) the possible shapes of the electron's charge that will just fit around the nucleus.
D) the possible standing waves that will just fit around the nucleus.
E) the patterns that are spherically symmetric relative to the nucleus.
Human Sperm greatly enlarged
Living systems such as the human body consist of closely interrelated elements
Structure of the human immunodeficiency virus (HIV).
Animal that offer potential medical uses
A human fragile X chromosome
Major Animal Phyla