Because the soil didn't have the same nutrients it has now due to lack of decomposition of other plants and animals.
A. Smallpox could make a good biological weapon because it is an airborne virus.
B. Smallpox can be prevented via vaccination and potentially prevented by HEPA filters.
The nurse should explain the newly diagnosed lung cancer client that the reason why his tumor metastasized so fast without displaying many signs/symptoms is that: the malignant tumors affect area tissues by releasing enzymes and toxins that make the other normal cells to differentiate uncontrollably.
Metastasis is the property of spreading of cancer cells. When the tumor at a location in the body starts spreading top other locations as well, it is said to be metastasizing.
Malignant tumors are those that metastasize. They travel to near or distant locations at the body and start dividing. These are cancerous in nature.
To know more about malignant tumor, here
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DEABFC in order, that’s the answer
