Can someone slove this please ill give u brinliest if you try and give a reasonable answer

Which technically is nasa developing that will astronauts reach mars

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

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry