Author Question: Earth's magnetic field is generated in the iron rich mantle. Indicate whether the statement is ... (Read 69 times)

BrownTown3 · **on:** Jul 27, 2018

Earth's magnetic field is generated in the iron rich mantle.

Indicate whether the statement is true or false

Question 2

We suspect that quasars are the active centers of galaxies because

a. fuzz around the central luminous regions produces spectra like a collection of normal stars..
b. a few quasars have large red shifts.
c. the central regions of some quasars fluctuate rapidly.
d. all of the above
e. none of the above