Because of the vast area of China that is covered with mountains that make it hard to inhabit said areas.
hope it helped you
Prominences and flares on the Sun can best be described as electrically charged particles. They are all caused by intense magnetic fields.
Answer:
B. The peak of the secondary immune response to antigen X
Explanation:
(See attachment for missing details)
The secondary immune response takes place when a person is repeatedly exposed to the same antigen. Getting to this stage, the immunological memory would have been setup and the immune system will immediately proceed to making antibodies.
From the attached, it takes the primary immune system 28 days to get to its peak and the secondary immune response is stronger than the primary immune response
Rock layers in order is basically natures calendar.
The highest layer is the newest formed layer
While the deepest layer was the oldest and probably has been there from some time
And everything in between goes accordingly
So putting rocks in order by age helps scientists better understand what was there before what and how the rocks changed over time.
Hope this helps!
Brailiest is always appreciated if you feel its deserved! :)
Answer: the answer is c I hope this helped