Q: Answer the following question given this paragraph: The rate of the expansion of the universe is increasing. The cause of this increase is unknown; one possible explanation involves a new form of energy called dark energy. Q: What is happening to the rate of the expansion of the universe? A:

OPTIONS:
- it is decreasing
- it is stable
- it is unknown
- it is increasing

A: it is increasing

input: OPTIONS:
- hydrogen
- pressure
- nitrogen
- energy Now, answer this question: Answer the following question given this paragraph: All chemical changes involve a transfer of energy. When zinc reacts with hydrochloric acid, the test tube becomes very warm as energy is released during the reaction. Some other reactions absorb energy. While energy changes are a potential sign of a chemical reaction, care must be taken to ensure that a chemical reaction is indeed taking place. Physical changes also involve a transfer of energy. Melting of a solid absorbs energy, while the condensation of a gas releases energy. The only way to be certain that a chemical reaction has taken place is to test the composition of the substances after the change has taken place to see if they are different from the starting substances. Q: All chemical changes involve a transfer of what? A:
A:
output: energy

Answer the following question given this paragraph: Each field of life science has its own specific body of knowledge and relevant theories. However, two theories are basic to all of the life sciences. They form the foundation of every life science field. They are the cell theory and the theory of evolution by natural selection. Both theories have been tested repeatedly. Both are supported by a great deal of evidence. Q: The cell theory and the theory of evolution by natural selection are basic to all fields in what branch of science? A:

OPTIONS:
- rock science
- zoology
- chemistry
- life science

Answer: life science

Problem: OPTIONS:
- surface
- outer core
- inner core
- crust
Q: Answer the following question given this paragraph: The lithosphere is composed of both the crust and the uppermost mantle. The lithosphere is a brittle, rigid solid. It is easily cracked or broken. Q: Besides the uppermost mantle, what else is the lithosphere composed of? A:
Answer: crust

Problem:OPTIONS:
- niacin
- vitamin A
- vitamin C
- vitamin d

Answer the following question given this paragraph: Skeletal system problems include osteoporosis, bone fractures, and ligament sprains. A diet rick in calcium and vitamin D may reduce the risk of osteoporosis and related bone fractures. Following safe practices may also reduce the risk of fractures as well as sprains. Q: A diet rich in calcium and what vitamin may reduce the risk of osteoporosis and related bone fractures? A:
****
A: vitamin d

Problem:OPTIONS:
- strong magnetism
- hydromagnetism
- exomagnetism
- electromagnetism

Answer the following question given this paragraph: Electromagnetism is magnetism produced by an electric current. Current flowing through a wire creates a magnetic field that surrounds the wire in concentric circles. Q: What is magnetism produced by an electrical current? A:
****
A:
electromagnetism