What is a pH scale? Explain what the numbers on the pH scale mean?

Which of the following conclusions can be drawn

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

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid