The sun appears to cross the plane of Earth's equator
when it reaches either one of the "equinox" points in the sky.
At those times, the lengths of day and night are nominally equal
everywhere (except at the poles), and the occasions are marked
as the beginning of Spring and Autumn.
Answer:
a) the roots are unequal.
b) the roots are irrational
c) the roots are non-real
2. 6 + 6x + 1 = 0
6x = 6+1
6x = 7
6x/6 = 7
x = 7/6
I don't know whether this was one of your options, but South Asia can be very well characterized as a Sub-continent.
In fact, it's is commonly referred to as "the Indian Subcontinent" or even simply "Subcontinent". One of the reason for a distinction of this part of the land is that it lies on a different tectonic plate.
<span />
<span>limestone is a hard sedimentary rock, made mostly of calcium carbonate or
dolomite, and it's used as building material & in the making of cement.</span>
