Question

Tectonic plates are present on the earth's surface because _____.

the lithosphere is weak and cracked in several places
the core is so hot that it created cracks in the crust
the hot asthenosphere created cracks in the lithosphere
the earth was originally formed with cracks in its lithosphere

Answer 1

the lithosphere is weak and cracked in sveral places

Answer 2

theyre on the surface because theyre less dense.