After 1965, black civil rights leaders found it difficult to
a. now support hispanic rights in the united states.
b. achieve economic equality in the north.
c. protest the vietnam war.
d. enforce the new laws in the south.

to answer this question you need to explain more

well that depends on how deep the hole is. you'd first go through te crust of the earth, then the upper mantle, then the lower mantle then the outer core, then the inner cor then you'd be stuck in the core to melt.