Which statement would be MOST important to include in a summary of

Ryan rears sheep for their wool. recently the quantity of wool that ryan gets has diminished. this is because the new sheep are not that wooly. ryan should add which nutrient to their feed so that the sheep becomes more wooly? a.cornb.ironc.cottonseedd. vitamin a

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

What's the waste product of electrons and pyruvate combining in fermentation?