An object that has a parallax angle of one arcsecond is 1. a distance of one lightyear from Earth.
2. a distance of one-parsec from Earth.
3. a distance of one Astronomical Unit (AU) from Earth.
4.a distance of one kilometer form Earth.

Exposed great deposits of coal and iron ore

Answer the government provides "unemployment insurance"

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.