Hypothesis for Newton’s second law F=ma

How to tell if a molecule is polar or nonpolar with electronegativity

From the perspective of an employee that effective channeling of work related information and concerns

Why does karst topography exist in some geographic location? a. few climates have enough oxygen b. most regions have rock layers other than limestone c. in most regions, the soil is too thin d. the water is too acidic enough in most places