After reading the article “Type A Blood Converted to Universal Donor…” tell me your thoughts on the current challenges in blood transfusions today? What are the advantages of this new process, and potential problems? Please provide a concise (~100 words) response.

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.

Ithink its because more have died recently than in the past.