Mike examines a cell using a microscope. he finds chloroplasts within the cell. where is this cell most likely to have come from? a.) mushroom
b.) dog
c.) tree
d.) human

How does friction with the atmosphere affect the speed of an artificial satellite

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.

Which of the following explains why a tree is often used as a model to represent the principle of common descent