Which statement best exemplifies the scientific principal that occurred in this case?
a. new experiments do not affect science because science remains constant
b. new experiments can affect future scientific explanations
c. new experiments can affect previous scientific explanations
d. new experiments yield untrustworthy data and should be carefully considered

Which of the following is the best definition of aerobic respiration? o a. the cellular process that releases energy by breaking down glucose o b. physical activity that involves the repeated motion of large muscle groups o c. physical activity that increases heart rate and breathing rate o d. the cellular process that converts solar energy to chemical energy

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.

What blood vessels carry blood to the heart? away from the heart?