Two bodies of water greatly affected by irrigation are-- A. Aral Sea and Colorado River

B. Black Sea and Thames River

C. Caspian Sea and Seine River

2. x2 + 8x + 12 = 0 to prove: x = -6 or x = -2

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.