A critical biotic factor in Yellowstone National Park is A. high elevation

B. high temperatures in the summer

C. population of wolves
form

D. proximity to water

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

What environmental cues and landmarks do the geese use to determine the timing and direction of their migration over the mountains? how do they find their way?

Need , i need a scenario of: artificial selectionmutationnon random mating