The graph below shows the energy associated with a chemical reaction. The activation energy decreases once a certain type of molecule is added. What type of molecule causes the activation energy to decrease as shown in the graph? O Lipid

O protein

O nucleus acid

O carbohydrate

The answer is 0.01 meter

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.

3. is true i think i should be right