Which best describes the storage of the genetic code

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

What is the mass of each element in a 324.8 sample of co2

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?