why the third line of defence takes more time to respond to an infection than the second line of defence.

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

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

Why do we perceive objects as retaining their brightness under different lighting levels?