In the fall semester, Matthew contracted pneumonia and had to drop his classes and return home to recuperate. He was already underweight, and he lost more weight during his illness. Up to how many extra Calories a day should he consume to regain to a healthy weight?

A. 3,500 kcal/day
B. 250 kcal/day
C. 3,000 kcal/day
D. 1,000 kcal/day

Which of the following factors would not contribute to allopatric speciation? a) a population becomes geographically isolated from the parent population.b) the separated population is small, and genetic drift occurs.c) the isolated population is exposed to different selection pressures than the ancestral population.d) different mutations begin to distinguish the gene pools of the separated populations.e) gene flow between the two populations is extensive.