Which of the following formulas represent valid ionic compounds that can be made from these six elements: al, be, f, li, n, and s? select all that apply.

What percentage of the earth's water is available for use by living things?

Factors that determine climate can a- latitude, topography, huracan, ocean current b- sun, precipitation, winds, precipitation c- sun, ocean currents, latitude, topography, winds, precipitation d- latitude, topography, lighting, ocean current

Earth's atmosphere is unique among the planets and is able to support life because it contains a large amount of a) oxygen b) helium c) methane d) carbon dioxide