Because the soil didn't have the same nutrients it has now due to lack of decomposition of other plants and animals.
Answer:
Chemotherapy targets the cell directly; biological therapy tries to help the immune system so it will attack the cancer cells.
Explanation:
Both chemotherapy and biological therapy are approaches used in cancer treatment.
Chemotherapy involves the use of aggressive anti-cancer drugs. It targets cancer cells directly with the goal to destroy them.
Biological therapy, also called immunotherapy, is a type of treatment used in battling diseases by activating or suppressing the immune system. It is also used in cancer treatment. Its goal is to boost the immune system and help it fight against cancer.
The difference between a hot spot volcano and the volcanoes from Ring of Fire can mainly be seen in the way of formation and functioning. The hot spot volcanoes are far away from any tectonic plate boundary and they manage to penetrate the crust over them and come out on the surface to usually create volcanic islands. The activity of the volcanoes from the Ring of Fire depends directly from the activity between the bordering tectonic plates, and as the borders move over time, the volcanoes stop existing, and new ones rise in the direction where the boundary moves.
The similarity can be seen in the type of eruptions, and that usually both types of volcanoes form volcanic islands.
Example for a hot spot volcano is Mauna Loa on Hawaii.
Disease and food shortages would keep the numbers down because of the increase in life.<span />
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LYSOSOME.Lysosomes are double membrane organelles produced by the Golgi Apparatus that contain enzymes that allow for foreign material to be dissolved when engulfed by the structure
