41. Which statement best compares the atomic
radius of a potassium atom and the atomic
radius of a calcium atom?
No) The radius of the potassium atom is smaller
because of its smaller nuclear charge.
2) The radius of the potassium atom is smaller
because of its larger nuclear charge.
(3) The radius of the potassium atom is larger
because of its smaller nuclear charge.
(4) The radius of the potassium atom is larger
because of its larger nuclear charge.

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

Ab c or d ? i’m not sure what the answer is

The earth's surface is (science) a: studied using seismic waves b: constantly changing over time c: only studied indirectly d: the same today as million of years