Evolution happens slowly over time
only occurs below the species level
is any change in the dna of an organism
can be caused by genetic drift
can be caused by natural selection

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?

Pulmonary arteries carry highly oxygenated blood. true or false?

Why is the statement not a hypothesis? sunflowers require soil and plenty of sunlight and water to grow and thrive.