Can someone tell me the answers to these problems?

Are the earth's ocean floor and continents the same age geologically? why or why not?

Ayoung boy has been found and police are trying to locate his family they take a dna sample from him and begin collec dna samples from families who have missing children if police use dna samples only from the fathers, which type of dn technology can they use to identify the boy's parent? y-chromosome analysis omtdna (mitochondrial dna) analysis vntrs (variable tandem repeats) o pcr (polymerase chain reaction) analysis

How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?