Mankind is a part of the hominid family which appeared about 5 million years ago during which epoch?

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 are the doorways into and out of cells, attached to the membrane, and built in the rough er.

What’s the student’s scientific question