Q: What element can form two different compounds with oxygen? Choices: - dioxide - H20 - hydrogen - carbon A:
carbon

(Question)
Q: Line graphs are especially useful for showing changes over what? Choices: - space - energy - velocity - time A:
(Answer)
time

Ques: Q: The nervous system is made up of these? Choices: - fibers - blood cells - muscles - neurons A:
Ans: neurons

(Q).
Q: What do you call the pattern of lines formed when light passes through a prism to separate it into the different frequencies of light it contains? Choices: - prismatic rainbow - kaleidoscope effect - light emission spectrum - atomic emission spectrum A:
(A).
atomic emission spectrum

Ques:Q: Modern taxonomy is based on many hypotheses' of the evolutionary history of organisms, known as this? Choices: - algorithm - cladistic - pathogeny - phylogeny A:

Ans:phylogeny

Ques: Q: The reaction of an alkyl halide with an inorganic hydroxide base at elevated temperature produces what? Choices: - blood - methane - yeast - an alcohol A:
Ans:
an alcohol