Which of these statements is true about internal respiration? [a] Production of ATP
[b] Exchange of gases between the bloodstream and tissue cells
[c] Exchange of gases between alveoli and the bloodstream
[d] Breathing between the atmosphere and the alveoli​

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

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

This is collection of data made by comparing objects in standard units. in science, the units are metric.