2. the main reason why most geologic changes went unrecognized until only a couple of hundred years ago was because a. geologie processes are more obvious today than they were during earlier times in human history b. scientists are more intelligent (have higher iq's) today c. most geologic processes are very slow d. none of the above

Answer erosion,oil spills,pollution,tourism,urban development;

Ascenario that doesnt  include any modern objects like electricity

Answertrue:

Your answer is d. silli hope this ! : ) i left an explanation down below if you need it: a sill forms when hot magma squeezes between layers of rock to form a hardened sheet of rock. a sill is basically a tabular sheet intrusion between old layers of sedimentary rock, volcanic beds, or in the direction of foliation inherent in metamorphic rock. the word sill means a concordant intrusive sheet.