How does a virus and viroid differ from each other?

Drag each tile to the correct location. match each trait that an organism displays to a reproductive strategy.

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

Which of the following is a period in the paleozoic era? devonian cambrian permian all of the above