Q: Q: Multiple sclerosis, huntington's disease, and parkinson's disease all affect what body system? Choices: - reproductive system - circulatory system - lymph system - nervous system A:
A: nervous system

Q: Q: What are the organs work together to allow us to see? Choices: - lungs - heart - nose - brain and eyes A:
A: brain and eyes

Q: Q: Has the average annual temperature on earth been rising or falling for the past 100 years? Choices: - unchanged - fluctuating - falling - rising A:
A: rising

Q: Q: Where does digestion take place within an incomplete digestive system? Choices: - lumbar region - abdomen - central nervous system - gastrovascular cavity A:
A: gastrovascular cavity