The number of years it will take you to have completed studied an organism that has a life cycle of 10 years, is 15 or more than that. This is because you cannot just easily derived to a conclusion without controlling the environmental aspects of the experiments.
Explanation:
Yes, it does. The reason being it causes people to spend more time with devices than with those around them. It also keeps people from truly resting during leisure time.
Letter C sounds the best to me!
C so the air goes through easier, is what I think
