Who is their top competitor in land company?

There is no map, maybe give the link, it may be b

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.

Answerbeaches;

It is nonrenuable which means that once you have used it, it's gone forever.