What is most abundant component of air by volume?
a. nitrogen
b. oxygen
c. hydrogen
d. ozone

Mosses, lichens and shrubs can be found where in russia? a.grasslands b.mountain regions c.coastal plains d.siberian tundra

Which types of seismic waves travel through earths interior? select all that apply. a) l waves b) p waves c) s waves

Afathom is a unit of length, usually reserved for measuring the depth of water. a fathom is approximately 6 ft in length. take the distance from earth to the moon to be 230,000 miles, and use the given approximation to find the distance in fathoms.