Please check my Biology answer! (c, c, d). 10 points best answer...?

1. Which system do you find in a human, but not in a flatworm?





a. a digestive system


b. a nervous system


c. a respiratory system








2. Which fuel powers all of the activities of cells in all organisms on earth?





a. glucose


b. DNA


c. ATP


d. protein








3. Through which body part do humans take in the energy they need to survive?





a. stomach


b. mouth


c. skin


d. intestines

Please check my Biology answer! (c, c, d). 10 points best answer...?
I got the same answers (c,c,d) although I did have to double check the flatworm. http://www.virted.org/Animals/Flatworm.h...
Reply:you are correct!!!!!!!!!!!!