Answer:
B).Methane, CH4
Explanation:
Methane is a compounds is primarily covalent because it is a saturated hydrocarbon.
1) it allows air, water and nutrients (salts) to penetrate the soil and reach the plant roots and not just stay on the surface of the soil where the plant can't absorb it.
. There actually are simple... F have higher electronegativity (4.0) than Cl. Electronegativity refers to the ability of an atom to attract shared electrons in a covalent bond.