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

Amineral forms from water at the edge of a lake. which statements best describe this mineral? check all that apply. the mineral formed from lava. the mineral formed through evaporation. the mineral formed when hot water cooled. the mineral crystallized from magma. the mineral crystallized from dissolved elements and compounds.

What forms of energy are involved when snow on a mountain breaks loose, resulting in an avalanche? during an avalanche, the( 1 ) energy of the snow on the mountain is converted into ( 2 ) energy as the snow cascades down. ( 1 ) a. elastic b. kinetic c. potential d. radiant ( 2 ) a. chemical b. kinetic c. nuclear d. potential

In the diagram below, ab and bc are tangent to o. what is the measure of