The difference between pH 3 and pH 4 is a 10 fold difference in the concentration of H+
It sounds like you may be looking for Peridotite, which is a type of ultramafic igneous rock that contain olivine as their main mineral in combination with <span>pyroxenes and amphiboles. I hope this helps! </span>
Answer:
The answer is A.
Explanation:
To test if the selenium from the mine has an effect on the fish living in the lake which i assume is close to the mine, testing the tissue of the fish from that lake and comparing it to the selenium levels of the fish from a nearby lake would be a testable hypothesis because there is a comparable aspect and there should be a difference in the numbers between the fish from the two lakes because of their distance to the mine.
I hope this answer helps.
