All of the following may help begin an ice age EXCEPT .
A. volcanic eruptions
B. Earth's revolution around the Sun
C. clustering of continents near the poles
D. an increased amount of dust particles in Earth's atmosphere

In this experiment you were asked to present three possible mechanisms. describe those mechanisms here and include drawings of those mechanisms. how will the bromination of trans-cinnamic acid and trans-stilbene allow you to distinguish between the three possibilities? what would you expect to find in your data in each scenario?

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

Draw the farm's ppf for corn and beef. draw a point that shows an inefficient combination of corn and beef. label ita. draw a point that shows an unattainable combination of corn and beef. label itb. draw a point that shows an efficient combination of corn and beef. label itc.