The formation process for supermassive black holes is linked with the formation of galactic ____.
a. disks
b. clusters
c. central bulges
d. coronae
e. halos
Question 2
A shift in the position of an emission line of an element toward the red or blue is produced by ____.
a. atoms that become ionized
b. electrons that transfer from a high energy level to a low energy level
c. electrons that transfer from a low energy level to a high energy level
d. the intensity of agitation of atoms in a hot gas
e. the motion of an object toward or away from the observer
Developmental steps in the formation of a plant embryo
Austrian Black and Tan Hound
Surface Fronts and Upper-Level Patterns: Cold Fronts and the Formation of Upper-Level Troughs
Formation of a polynucleotide by a hypothetical dehydration reaction
X-Linked Recessive Pattern