PLEASE HELP ASAP 30 POINTS + BRAINLIEST TO FIRST CORRECT ANSWER Which one was a source of the flood water that brought fertile soil for growing crops?

melting snow
dams and canals
summer rainy season
the surrounding seas

Geologists know that potassium-40 decays to argon-40, with a half-life of 1.3 billion years. if an analysis of a feldspar crystal in a sample of granite shows that 75 percent of the potassium-40 atoms have decayed to form argon-40, what is the age of the granite

Sam hated the long nights of winter! his mother called him in from playing so early: around 4: 30 pm! it is usually dark out when sam is eating supper. what letter represents the long nights where sam lives? a) a. b) b. c) c. d) d.

Explain the reason for having an equator and a prime meridian. how do these two lines us to navigate our world? describe your opinion in at least two to three sentences.