1. Imagine archeologists find the preserved remains of a wooly mammoth. Considering the fossilized remains of fauna nearby, the scientists think this wooly mammoth may be from the
beginning of the Holocene epoch, which started 11,700 years ago. They wish to use radiometric
dating to find the absolute age of the specimen. Which parent/daughter isotope percentages will
they most likely use to date the mammoth specimen?

Ther are many reasons.. is it a multiple choice?

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.