Which is not a factor that contributes to natural selection?

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only

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 step is the same in both forms of fermentation, as well as in cellular respiration?