Answer:
If it's triangles on one side it's a cold front
If it's a red line with semi circles then it's a warm front.
Change in the external Environment may resulted in the changing in the population of beetles.
Hihihihihihihihihihihihihihihihihi
It is B because I had to do this question to
It's called hypoxemia, it's low levels of oxygen in the blood, to be more specific, it's oxygen loss in your blood from your arteries. It can cause respiratory disorders, and tissue hypoxia, as a result of the blood not providing much oxygen to your body.
I hope I helped :)
