Another easy for brainliest
what is the rock that has no exposure to chemical or mechanical weathering known as?

subsoil
topsoil
regolith
bedrock

D-bedrock

Explanation:

"Bedrock essentially refers to the substructure composed of hard rock exposed or buried at the earth's surface" Due to Bedrock being buried at the earth surface it has minimal exposure to "chemicals or mechanical weathering "

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

it's all four options.