Q: The brain and spinal cord are part of what system? Choices: - cardiovascular system - digestive system - immune system - central nervous system A:
central nervous system

Q: What type of weathering breaks rock into smaller pieces? Choices: - fluid weathering - chemical erosion - chemical weathering - mechanical weathering A:
mechanical weathering

Q: Q: What limits the growth or development of an organism, population, or process? Choices: - decreasing factor - limiting membrane - mutation factor - limiting factor A:
A: limiting factor

Question: Q: What can bacterial stis be cured with? Choices: - antioxidants - pesticides - antiviral drugs - antibiotics A:
Answer: antibiotics

*Question*
Q: The outer planets are made of hydrogen and helium, so they are termed what? Choices: - hydrogen giants - light giants - helium giants - gas giants A:
**Answer**
gas giants

(Q).
Q: What type of physical properties of a substance do not depend on amount? Choices: - inherent - extensive - stable - intensive A:
(A).
intensive