Hey! i really got to go to the bathroom, would you be able to make 45 ml of a 13-fold dilution of the magnesium sulfate stock i left on the bench? there should be plenty stock available, ! " how much volume of stock is needed to carry out your scientist buddy's request? (answer should have 3 decimal places.)

Ithink option a is correct because you cannot donate a different blood group than yours because it won't match.option a says betsy can donate to mark. they have the same blood group so donation can happen.

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.