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

1. what is the relationship between the shape of an enzyme and the reactions they catalyze?

2. how does an enzyme inhibitor work?

separate your answers so i dont get confused : )

burning fossil fouls really decrease the carbon in the atmosphere so b