Scientists wondered how volcanoes could be located so far from tectonic plate boundaries until one proposed the idea of Select Answer , where the magma is much hotter than the surrounding magma. These are Select Answer and do not move with tectonic plates. They are responsible for the creation of Select Answer island chains.

Which of the following observations darwin shape his concept of descent with modification? a) species diversity declines farther from the equator.b) fewer species live on islands than on the nearest continents.c) birds can be found on islands located farther from the mainland than the birdsê¹ maximum nonstop flightdistance.d) south american temperate plants are more similar to the tropical plants of south america than to thetemperate plants of europe.e) earthquakes reshape life by causing mass extinctions.