In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

Question: Slowing plate tectonics indicates convection is 
 Answer: decreasing
Convection on early Earth was faster and so plate tectonics was faster.

Question: James loved to travel the world. In his travels, he noticed that America contained a lot of industry while China contained not much industry at all. Which country produced more hazardous wastes? 
 Answer: America
Countries with more industry produce more hazardous wastes than those with little industry.

Question: John was studying skin disease in his research lab. He observed that the less UV rays that contact the skin resulted in skin cancer rates becoming 
 Answer: Smaller

More UV rays increase skin cancer rates.