PLEASE HELP ME!!! Which statement is true about modern scientists?

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

How did the discovery of the rhesus factor affect society? o more patients died from having a transfusion with the wrong rhesus factor 0 new treatments during pregnancy could prevent harm to the developing child. o less donated blood could be used in the treatment of patients. the number of blood types was reduced by half

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?