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? Choices: - hydrogen - pressure - nitrogen - energy A:
energy
(Question)
Answer the following question given this paragraph: Deposition also occurs when a stream or river empties into a large body of still water. In this case, a delta forms. A delta is shaped like a triangle. It spreads out into the body of water. An example is pictured below ( Figure above ). Q: Deposition also occurs when a stream or river empties into a large body of what? Choices: - even water - homogeneous water - calm water - still water A:
(Answer)
still water
Ques: Answer the following question given this paragraph: Q: What basic plant structure facilitates dispersal of pollen and fruit by raising reproductive structures? Choices: - root - leaf - flower - stem A:
Ans: stem
(Q).
Answer the following question given this paragraph: Dendrites extend from the cell body and receive nerve impulses from other neurons. Q: What do dendrites from the cell body recieve impulses from? Choices: - axon - other cells - myelin - other neurons A:
(A).
other neurons
Ques:Answer the following question given this paragraph: Since life began on Earth, there have been at least five major massive extinctions. Q: How many major massive extinctions have been since life began on earth? Choices: - three - four - one - five A:

Ans:five
Answer the following question given this paragraph: The atomic weight of an element is a weighted average of its isotopes. Q: How do you determine the atomic weight of an element? Choices: - multiply protons and neutrons - subtract protons from electrons - divide protons and neutrons - add up protons and neutrons A:
add up protons and neutrons