a)the number of species on Earth or b)the number of individual organisms on Earth
The answers are - creating laws to regulate the amount of pollution, -planting trees at the same rate they are being cut down, -teaching citizens about water consumption and waste.
All three of these measures help people understand the importance of sustainability as well as ensure that on a governmental level, the required steps are being taken that a nation will witness increased dependance on renewable energy sources and not fossil ones.
A control group is important for an experiment because it allows the experiment to minimize the changes in all other variables except the one being tested.
Otitis external is the medical term for swimmers ear.
