Older red stars are found where in the Galaxy?
A. only in the disk
B. only in the bulge
C. only in the halo
D. all throughout the Galaxy
Answer: D
You might also like to view...
Imagine that, at a certain point in empty space, the curl of the magnetic field has a positive x component. What can we conclude from this information?
A. Ex must be positive at that point. B. Ex must be negative at that point. C. Ex must be zero at that point. D. Ex must be increasing with time at that point. E. Ex must be decreasing with time at that point. F. The magnetic field described is not physically possible. T. None of the above.
Which carbonate mineral reacts readily with cool, dilute hydrochloric acid to produce visible bubbles of carbon dioxide gas?
What will be an ideal response?
Driscoll et al.(365) write that: "Without strong acid anions, cation leaching in forest soils of the Northeast is driven largely by naturally occurring organic acids derived from the decomposition of organic matter, which takes place primarily in
the forest floor. ... [O]rganic acids tend to mobilize Al through formation of organic–Al complexes, most of which are deposited lower in the soil profile ... This process ... results in surface waters with low concentrations of Al. ... Acidic deposition to forest soils with base saturation values less than 20% increases Al mobilization and shifts chemical speciation of Al from organic to inorganic forms that are toxic to terrestrial and aquatic biota." Exactly what are they saying? Explain.
You roll a ball off a table and at the same time drop a second ball straight down from the edge of the table. The second ball reaches the ground before the first ball
Indicate whether the statement is true or false