Answer the following question given this paragraph: Health care has been improving over the most recent centuries. Vaccines were developed that could prevent many diseases ( Figure below ). Antibiotics were discovered that could cure most infections caused by bacteria. Together, these two advances saved countless lives. Q: Antibiotics can cure most infections that are caused by what? Choices: - bacterium - algae - bile - bacteria A:
bacteria
Answer the following question given this paragraph: A combustion reaction occurs when a substance reacts quickly with oxygen (O 2 ). You can see an example of a combustion reaction in Figure below . Combustion is commonly called burning. The substance that burns is usually referred to as fuel. The products of a combustion reaction include carbon dioxide (CO 2 ) and water (H 2 O). The reaction typically gives off heat and light as well. The general equation for a combustion reaction can be represented by:. Q: What occurs when a substance reacts quickly with oxygen? Choices: - convection - oxidation - catalytic conversion - combustion reaction A:
combustion reaction
Q: Answer the following question given this paragraph: Vivipary refers to the development and nourishment of an embryo within the mother's body but not inside an egg. Birth may be followed by a period of parental care of the offspring. This reproductive strategy occurs in almost all mammals including humans. Q: What refers to the development and nourishment of an embryo within the mother's body but not inside an egg? Choices: - birth - adolescence - ovulation - vivipary A:
A: vivipary
Question: 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:
Answer: nervous system
*Question*
Answer the following question given this paragraph: Breakwaters are structures that protect the coast like barrier islands. Groins are structures that help prevent longshore drift from eroding a beach. Q: What are structures that protect the coast like barrier islands called? Choices: - domes - dunes - fortresses - breakwaters A:
**Answer**
breakwaters
Answer the following question given this paragraph: Physical changes are changes in the physical properties of matter but not in the makeup of matter. An example of a physical change is glass breaking. Q: Glass breaking is an example of what type of change that doesn't affect the makeup of matter? Choices: - reversible - thermal - chemical - physical A:
physical