How does the use of cell technology benefit public health? it makes it possible to discover new anticancer drugs. it makes it possible to culture fewer types of cells. it makes it possible to regulate medical research. it makes it possible to avoid testing drugs in humans.

4, two dominant and two recessive

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 b, as with an inference you make a statement with no evidence