Answer:
Both #1 and #2
Explanation:
Mark me as brainliest if this helps!
Physical and chemical laws govern living systems.
The answer is B) red blood cells. I hope this helps!
Answer:
blood vessels dilate allowing more oxygen to be inhaled
Explanation:
Emerging diseases are those whose incidence in humans has increased in the past 2 decades or threaten to increase in the near future. Re-emerging diseases are are diseases that reappear after they have been on a significant decline.
