Why blood group o has not antigen on the surface of red blood cell? ?

An example of internal feedback working to maintain homeostasis is your a. decreased respiration rate when you are studying b. decreased heart rate when you are sad c. increased respiration rate when your muscles need more oxygen d. increased heart rate when your lungs need more oxygen

What is the correct trna sequence that would match the following mrna sequence.gcgaua

Which of the following are the functions of the integumentary system? yadda-yadda, the 1st answer is the brainliest. : )