Hydrogen ions move through the membrane protein shown below by facilitated diffusion.
What must the membrane protein do so that hydrogen ions can flow through
it?
I need help

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