Archeologists have discovered a mummified corpse and they want to know how long ago she died. They determine that there is
25% C14 in her body. Use the reference diagram to determine how long ago she died. Explain your answer.

By water evaporation from the leaves is created a negative pressure at the top of the tree that promotes the ascension  of the water through channels that are called xylem. there are also two molecule forces that are involved: the intra-water molecules cohesion (water molecules stick to each other) and the adhesion when the water molecules stick to the channels they are running in. this is what enables water to go from the roots to the top of a tall tree.

Since we don't see a strand; i got answers off a sheet and the correct answer is "2".