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.
Examples of structures in which extensive surface area is important for function.
It is important to ask patients what other health care providers they are seeing, such as the dentis
The continents were not always in their present positions. The position of the continents is importa
Hannah Höch, Cut with the Kitchen Knife Dada through the Last Weimar Beer Belly Cultural Epoch of ...
Hydrolysis reactions for some biochemically important phosphate compounds (part 1)
Remote sensing and GIS are important tools