Where does the energy come from that your body uses to keep you alive?
A) It comes from the foods you eat.
B) It is produced from the radiative energy of the Sun on your skin.
C) It is created during the time that you rest or sleep.
D) It comes from the water you drink.
E) It is in the air that you breathe.
Question 2
Which of the following statements about the Milky Way Galaxy is not true?
A) One rotation of the galaxy takes about 200 million years.
B) Our solar system is located very close to the center of the Milky Way Galaxy.
C) The galaxy is about 100,000 light-years in diameter.
D) It contains between 100 billion and 1 trillion stars.
Hydrogen sulfide as an energy source for chemoautotrophic bacteria in the deep sea.
Major fluid compartments in the body
The Body as Mapped on the Motor Cortex and Somatosensory Cortex
Major cell types in the human body.
Systems and Organs of the Human Body
Food Additives Can Help Keep Your Foods Safe and Healthy