Answer: Structural changes can occur during the formation of egg or sperm cells, in early fetal development, or in any cell after birth. Pieces of DNA can be rearranged within one chromosome or transferred between two or more chromosomes.
Answer:
I think either A or C but I think it's A
Explanation:
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The answer is body's line of defense. The first line of defense which includes physical as well as chemical barriers would defend the body from infection. It would include the tears, cilia, stomach acid,urine, white blood cells,mucus and the skin. The skin is the largest organ and would act as a barrier from pathogens. If first line of defense won't work the second line will then be activated.
Answer:
Fasle
Explanation:
The abdominal thrust, as the name suggest, is administered to the abdomen. Specifically, it targets the diaphragm. It is a way to dislodge a foreign object stuck in someone's trachea - i.e. to stop someone from choking.
The giver stands behind the choking individual and applies firm pressure to their diaphragm with a fist, which should force the lungs to expel the object.
It is better known as the Heimlich maneuver.
