Which characteristics do all bony and jawless fish have in common? Check all that apply. - backbone
- swim bladder
- scales
- gills
- bony skeleton

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

Why do bacteria thrive even in hostile environments

When analyzing tree rings, what do scientists assume a thin ring indicates?