Which of the following explains how one of the postulates in John Dalton's atomic theory later became robust knowledge

Which feature do highland climates have that lower elevation areas do not?

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong