What is the significance of moses

What is the mercury length of time for one revolution around the sun?

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

Residents of moldova are mainly a. russian b. ukrainian c. serbian d. romanian the answer is d. romanian