Answer:
Blood carries the oxygen through out the body and gets re-oxygenated to keep the body going.
Explanation:
Just trust me.
Lions have many other sources of prey so they would most likely still be alive. If we are excluding the existence of other animals, then lions would decrease in population after fourteen days (longest they can go without food).
Answer:
In addition to erythropoietin, red blood cell production requires adequate supplies of substrates, mainly iron, vitamin B12, folate, and heme. RBCs survive about 120 days.
Explanation:
The answer to this question is "to put the two groups into the different environment" as a scientist separates a population of fruit flies into two groups and this would increase the rate of speciation in this population. This is the best solution that the scientist could do to increase the rate and get a more reliable result and observations.
