When the wall of the stomach fails to protect itself from erosion by gastric juice, the result is?

Compare and contrast the adaptations of free-living flatworms and parasitic flatworms

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

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