One way that homeostasis can be lost in the skeletal system, and how can it be regained?

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

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

What does it mean for a cell membrane to be selectively permable