The first vaccine was developed for cowpox and smallpox.
Breathing of contaminated air is the most common way, some can pass through the skin into the blood stream e,g acid
Answer:
Radiation
Explanation:
is a treatment that uses a radiation ray to kill cancer cells in a infected area. It can be done externally by a machine that aims the radiation at the targeted area. It can also be done internally by using needles, seeds, wires, and so on. The advantage of this treatment method is painless. Some people afraid that the external radiotherapy will cause the body become radioactive.
B. 1/4 muliplied by the negative square root of 36 equals -1.5, which is a irrational number. A irrational number is a real number that cannot be made by dividing two integers
