Answer:
the ability of the circulatory and respiratory systems to supply oxygen to skeletal muscles during sustained physical activity.
<span>It uses chemicals for the destruction of cancerous cells. Therefore, the correct answer is C i.e., drugs. Main aims of chemotherapy are to cure, control and palliate. It stops or slow down the growth of cancerous cells. The drugs are directly injected into the blood of the patients, thus, chemotherapy is a systemic therapy.</span>
Answer: Viruses, bacteria or other microbes (tiny organism like creatures) can get into our system and create disease.
An infection from a bacteria or germ called H. pylori :)
