What are the important relics of the quark epoch? Why?
What will be an ideal response?
Question 2
What prevents a brown dwarf from undergoing nuclear fusion?
A) Degeneracy pressure halts the contraction of a protostar so the core never becomes hot or dense enough for nuclear fusion.
B) There is not enough mass to maintain nuclear reactions in a self-sustaining way.
C) The surface temperature never rises high enough for the radiation to be trapped and heat their interior to the temperatures required for nuclear fusion.
D) Radiation pressure halts the contraction of a protostar so the core never becomes hot or dense enough for nuclear fusion.
E) There are too many heavy elements and not enough hydrogen for fusion to occur in a self-sustaining way.
Polyploidy has been an important factor in the evolution of plants.
Important Motor Regions of the Human Brain
A passenger train crosses Stony Creek Bridge in the Rocky Mountains in 1878. Railroads were importan
Washing hands and removing jewelry are two important safety habits all service technicians ...
Important Concepts in Clinical Massage Therapy
ATP, an important energy currency in cells