Explain the ph scale. Include the range for acids, bases and neutral substances

Put the following steps of the convection process in the correct order. 1. gravity pulls cooler matter downward. 2. the matter expands and decreases in density. 3. an up-and-down flow of matter produces a convection current. 4. matter is heated. 5. warmed matter is forced upward. question 2 options: a) 4, 2, 5, 1, 3 b) 2, 4, 3, 1, 5 c) 3, 2, 5, 4, 1 d) 1, 4, 2, 5, 3

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?