Alinear graph with a slope of zero would indicate which of the following?

What is the ph of a solution with a 1.50 × 10−9 m hydroxide ion concentration?

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

If oil spills continue, all of the following should be expected except (2 points) death of aquatic life. polluted groundwater. decreased soil productivity. increased global temperatures.