Ruby is making earrings for herself and her four best friends as a project. She has a 1.9 cm long rod of pure platinum that she wants to divide into 10 equal pieces — one piece for each earring. In order to get it exactly right, she is going to measure each 0.19 cm long piece in millimeters. How many millimeters long will each piece be? A. 0.19 mm B. 1.9 mm C. 19 mm D. 0.019 mm

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.

The answer is nucleic acid