Why does crab grass do so well when ordinary grass struggles in late summer? Is this a phenomenon? Or is this based on a scientific principle? If so, what is it that causes crab grass to thrive in relation to the different type of plants?

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

2b2t

explanation:

2b2t