Balsam Lake Provincial Park covers an area of 448 ha. Calculate the crude density of blue jays in the park if 127 blue jays were counted Assuming the blue jays only inhabit 236 ha of the park, calculate the ecological density of the blue jays. Please show your work and use the right units

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