an experiment was performed on a group of rats to see if they were affected by loud music. another group of rats was left in silence which group was the control group

Solutions to environmental problems in europe must

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

Adistinctive characteristic of mammals that is not observed in other vertebrates is