When and where would the number of daylight hours be the greatest? A) during the summer near the north pole
B) during the winter near the equator
C) during the winter near the north pole
D) during the summer near the equator

c- cold periods in earth's history during which glaciers covered much of the surface.

explanation:

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer