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.
ABO Blood Reactions Are Important in Transfusions
Figure 7.1 shows the rapid decline in the trust of Americans in government since the 1960s. This de
Step 8 is very important. Be sure that the customer’s concern has been corrected.
Important Concepts in Clinical Massage Therapy
Hydrolysis reactions for some biochemically important phosphate compounds (part 1)
Important Bonds in Biological Molecules