pH in the Earth's ocean basins has been stable for 300 million years until recently when there has been a 30% increase in H+ concentration.Question 20Select one:TrueFalse

Recall by how much the acid levels in the ocean have increased by over the past 250 years.

By the late Hadean, the ocean's pH was closer to neutral due to A- combination of CO₂ with water B- young Subduction zones C- erosion of rocks by water D- rainfall on the oceans

The more CO2 in the oceans the ______ the pH*1 pointHigherLower

Which of the following is an incorrect statement about pH?ANSWERMost microbes grow best at a pH between 5 and 6.Acids contribute hydrogen ions (H+) to an aqueous solution.Bases contribute hydroxide ions (OH-) to an aqueous solution.Some environments have a recorded pH lower than 1.

Rainwater was collected at thirty different sites near an industrial basin and the amount of acidity (pH level) was measured. The pH values were:2.6, 2.7, 2.9, 3.2, 3.3, 3.7, 3.7, 3.8, 3.9, 4.1, 4.2, 4.2, 4.2, 4.4, 4.4,4.6, 4.8, 4.9, 4.9, 5.0, 5.5, 5.5, 5.6, 5.7, 5.8, 5.8, 6.0, 6.2 6.3, 6.3The interquartile range is: