<span>A. Mouth, pharynx, esophagus, stomach, large intestines, small intestines</span>
Answer:
molecules, cells, tissues, organs, systems
Explanation:
Answer:
It means very determined, like you have a goal, and you are going to complete it. Even if you mess up you keep trying over and over again.
Explanation:
I think it is c because primary research is original and from the certain time while secondary research is collected from others by research and stuff