What caused earth to develop layers as it’s cooled? a. it’s magnetic field b. it’s speed of rotation c. escape of gases d. differences in density

Give two examples of what would occur if one of the pairs did not match or had an extra chromosomes. explain how this might occur, and if it would be dangerous to the individual. fast.

Awolf pack hunts,kills, and feeds on a moose. in this interactions, the moose is a?

Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?