A Recent Book by a Reputable Biologist Suggests There Is

Multiple Choice

A recent book by a reputable biologist suggests there is a deep, hot biosphere under the Earth's crust that may have more biomass than all life at the Earth's surface. This would primarily rely on what organisms?

A) primitive animals
B) primitive heat-loving plants
C) fungi living on the detritus from above
D) thermoacidophilic archaea
E) viruses