Which of the statements below best describes the relationship between chromosomes and genes?

Ais a group of individuals of the same that exist together in the same place at the same time

What did not occur in the proterozoic eon a)the oxygen levels increase greatly in the atmosphere,b)the emergence of the eukarya , c)muti cella’s eukaryotic organisms began to diversify,d)anaerobic bacteria kept thriving with more oxygen

What drives an advertising campaign?