For now, we only need to know that air heated at the earth's surface at the equator rises, and cools as it rises and expands.
(it; expands; ) (that air; heated; L:at the earth's surface at the equator) (it; rises; ) (we; only need; to know that air heated at the earth's surface at the equator rises, and cools; T:For now) Context(we only need,List([9, 21))):(we; only need to know; that air heated at the earth's surface at the equator rises, and cools) Context(we only need to know,List([9, 29))):(that air heated at the earth's surface at the equator; rises; )
we only need,List([9, 21)) we only need to know,List([9, 29))
it that air it we we that air heated at the earth's surface at the equator
expands heated rises only need only need to know rises
L:at the earth's surface at the equator
to know that air heated at the earth's surface at the equator rises, and cools T:For now
that air heated at the earth's surface at the equator rises, and cools