The Earth orbits a much larger Sun. Use the relationship between size (mass) and gravity to explain why Earth orbits the Sun and not the Sun around the Earth.

Diabetes is often suspected when glucose shows up in urine tests. use the model to explain how glucose could be present in urine. why do you think this symptom is especially concerning for young people?

Which best describes carbon dioxide’s path out of the body

Which of the following molecules will diffuse most quickly across a lipid bilayer membrane? a. h2o b. o2 c. h2po4 d. glucose e. na+