Question: Brad studied ancient human settlements from 100,000 years ago. His colleague Phil studied human settlement from 8-10,000 years ago. They were both fascinated by their findings. Which colleague didn't study that more people settled down in villages?
Answer: Brad

Question: Many years ago there was a beach Called Coast Brigs where many coral and other life lived. A refinery that burned coal was built nearby and over time the water nearby became very acidic. The coral and marine life died because of this but a few miles north on another beach named Greendale the same creatures are surviving just fine. Will the water at Greendale becoming more acidic cause and increase or decrease in marine life?
Answer: decrease

Question: David was interested in the coloration of ocean's water. To understand the phenomenon he first observed the color of water at forty feet depth. He noted his observation as point A. Then he observed the color at hundred feet depth. He noted his observation as point B. Then he observed the color at four thousand feet depth. He noted that observation as point C. He now have some ideas how the color of water changes according to its depth. Where there would not be any visible sunlight, point B or point C?
Answer:
point C