What are the names of the species used in this experiment? which of these species was the most tolerant of increased acidity in the aquarium? which species was the least tolerant?

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil

Which of the following best explains the changes in biodiversity shown in the graph?