Answer:
Explanation:Sometimes memories of loss or of a lost loved one may light up the reward receptors in the brain. This means that moving on or “letting go” can be much more difficult.
The motor unit is composed of both the skeletal and muscular systems.
Mitosis process that's it
Answer:
Cancer is often detected when an individual notices a change in his or her health — excessive fatigue, for example, or unusual bleeding, a lump that doesn't go away, unexplained weight loss, night sweats, or a persistent change in bowel or bladder habits.Cancer that's diagnosed at an early stage, when it isn't too large and hasn't spread, is more likely to be treated successfully.
Explanation: look it up i hope it help