<span>The correct answer is paleomagnetism. This is mostly done, however, in regards to the magnetic properties found in the earth itself, like in rocks and minerals or ores, and less with the actual magnetic poles of the earth, but it does encompas it too. It is very useful in the science of tectonic movements and discovering the chonology of geology.</span>
The person known as "father of Modern Taxonomy" is Carl Linnaeus, a Swed living in 18th century, who was a botanist, zoologist, and physician and who had laid the foundations for the modern naming scheme in biology.
The correct answer is - phytoplankton.
The phytoplantkon is an organism that is at the bottom of the food chain, and it is the basis for the food chain in the marine environments. It is an organism that is an autotroph, which basically means that it manages to produce complex organic compounds from simple substances that are present in its surroundings, and very importantly, it uses mostly light or inorganic chemical reactions, thus the phytoplankton is a producer, and it is a main food source for large number of marine species.