The Meselson and Stahl's experiment provided conclusive evidence for the semiconservative replication of DNA in E. coli . What pattern of bands would occur in a CsCl gradient for conservative replication

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

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls