Ill try to look it up kk?
The answer is C. The method which involves counting the number of organism in a specific area is sampling. It is one common method to estimate the population of certain organisms used by biologists. In a given range, the number of plot is determined and per plot the number of individuals is multiplied to the number of plots then this results to an approximate population size.
B) Because Hydroelectric energy does not create waste but could cause ecological impacts and flooding.
