Ameteorite was found to contain 40 argon-40 atoms for every 10 potassium-40 atoms. the half life of patassium-40 is 1.25 billion years. assuming no loss of daughter isotopes, how old is the moon rock?

i'd say that the moon rock is about 2.2 billion years old.

i tried the eyeshadow trick you told me about and it worked so good i i did a yellow going into orange colors and it was bright and you could see it on my eyes

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.