You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Paragraph: When two skateboarders push against each other, it causes them to move apart. The harder they push together, the farther apart they move.
 Question: When you use more force to move a car it will 
 Choices: A)move less 
B)move further
move further

Paragraph: A decrease in greenhouse gas levels decreases global temperature and an increase raises global temperature.
 Question: If Mona's country normally emits not a lot of greenhouse gas, but one day decides to raise the amount they emit, what will happen to the global temperature? 
 Choices: A)increase 
B)decrease
increase

Paragraph: Because these isotopes decay more slowly, they can be used to date much older specimens.
 Question: For dating the age of a fossil, and compared to the isotope Carbon 14 with its 5730 year half-life, would Francium with a 22 minute half-life be a 
 Choices: A)less useful isotope? 
B)more useful isotope

less useful isotope?