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: John was observing a range of patients skin under a microscope. He noticed that the more melanocytes the skin had, the production of melanin was 
 Answer: higher
However, the melanocytes of people with darker skin produce more melanin.

Question: If we are able to recycle less things we have 
 Answer: more waste
The advantage to biofuels is that they burn more cleanly than fossil fuels. As a result, they create less pollution and less carbon dioxide.

Question: Will is smoking a cigarette. This causes _____ oxygen to be available for diffusion in his lungs, so less oxygen will be absorbed into his blood. 
 Answer: less

Smoking reduces the amount of oxygen available for diffusion at the lungs, so less oxygen gets absorbed and blood is oxygenated to a lesser degree.