Answer the following question given this paragraph: The four-chambered mammalian heart can pump blood in two different directions. The right side of the heart pumps blood to the lungs to pick up oxygen. The left side of the heart pumps blood containing oxygen to the rest of the body. Because of the dual pumping action of the heart, all of the blood going to body cells is rich in oxygen. Q: How many chambers does a mammalian heart have? Choices: - one - five - three - four A:
four
Answer the following question given this paragraph: As for methane and ammonia, the domain geometry for a molecule with four electron pairs is tetrahedral. In the water molecule, two of the electron pairs are lone pairs rather than bonding pairs. The molecular geometry of the water molecule is bent. The H-O-H bond angle is 104.5, which is smaller than the bond angle in NH 3 (see Figure below ). Q: The domain geometry for a molecule with four electron pairs is called what? Choices: - bent - trigonal planar - linear - tetrahedral A:
tetrahedral
Q: Answer the following question given this paragraph: Staying balanced when riding a scooter requires control over the body's muscles. The nervous system controls the muscles and maintains balance. Q: What helps control the muscles and maintain balance? Choices: - circulatory system - muscular system - lymphatic system - nervous system A:
A: nervous system
Question: Answer the following question given this paragraph: Prokaryotes include Bacteria and Archaea. An individual prokaryote consists of a single cell without a nucleus. Bacteria live in virtually all environments on Earth. Archaea live everywhere on Earth, including extreme environments. Q: Where on earth do bacteria live? Choices: - skin - water - blood - all environments A:
Answer: all environments
*Question*
Answer the following question given this paragraph: Sulfur oxides include sulfur dioxide (SO 2 ) and sulfur trioxide (SO 3 ). Sulfur oxides are produced when sulfur and oxygen combine. This happens when coal burns. Coal can contain up to 10 percent sulfur. Q: What is produced when sulfur and oxygen combine? Choices: - treatment oxides - Solid oxides - ethanol oxides - sulfur oxides A:
**Answer**
sulfur oxides
(Question)
Answer the following question given this paragraph: Q: The force that pulls objects toward the earth is what? Choices: - Friction - Magnetic force - Tension - gravity A:
(Answer)
gravity