Question 1. Which of the following includes all the others? A) atom  B) cell  C)

Question
1. Which of the following includes all the others?
A) atom 
B) cell 
C) organism 
D) population
2. In science, a hypothesis must be 
A) testable 
B) derived from a theory 
C) a known fact
D) able to be proven absolutely true
3. A chlorine atom has 17 protons, 18 neutrons, and 17 electrons. The atomic number of chlorine is 
A) 8 
B) 17 
C) 35 
D) 52
4. If you place the probe of a pH meter in lye or sodium hydroxide (NaOH), it will read pH 14. Sodium hydroxide is 
A) an acid 
B) neutral