What type of radiation produces vitamin D in the skin?

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

Every early childhood education program should develop a

This is a scaffolding of protein fibers that us sell keep it shape in a cell division and cell movement