Explain the role and importance of pH, Salinity, Oxygen, Nitrogen, Phosphorus, and Carbon Dioxide on aquatic ecosystems.

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.

2. which is the last step in the scientific method?

What happens when a scientific theory is shown to be an accurate description of a phenomenon?