Sarah and Jane were playing basketball. They collided and fell. Sarah’s knee was lightly bruised. Jane’s elbow was scratched, causing a little blood to ooze out. After a few days, Jane observed pus formation around the scratch on her elbow, while Sarah’s knee was fine. The pus formation on Jane’s elbow is a result of . The receptors on the sensed the pain that Jane experienced.

The answer is a: the eggs have half as many chromosomes as the body cells

Digestion because it removes waste

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.