What is a possible diameter for a typical neutron star?
a 2km
b 20km
c 200km
d 2000km

Describe how an electric generator works

When is your respiration rate likely to change? a. when your intestines are digesting b. when your cells have too much glucose c. when your cells need more oxygen d. when your liver is working after a meal

How can an organ, such as the lungs, work for multiple body systems?