What spheres are formed by remains of living things with a black hard surface

Biosphere

Explanation:

The spheres that are formed by remains of living things with a black hard surface are known as BIOSPHERE.

Considering the fact the Biosphere covers everywhere there is life, including the forest, deep-rooted surface where life can form, and the water where lives exist.

Therefore, the remains of living things are the life part, while a black hard surface is the nonliving things part, that is also connected and influence by the whole activities in the ecosystem.

Hence, the right answer is BIOSPHERE

answer; debriefing;

the civil war started because of uncompromising differences between the free and slave states over the power of the national government to prohibit slavery in the territories that had not yet become states. when abraham lincoln won election in 1860 as the first republican president on a platform pledging to keep slavery out of the territories, seven slave states in the deep south seceded and formed a new nation, the confederate states of america. the incoming lincoln administration and most of the northern people refused to recognize the legitimacy of secession. they feared that it would discredit democracy and create a fatal precedent that would eventually fragment the no-longer united states into several small, squabbling countries.

i believe it caused a regional impact in societ