Which technology uses multiple approaches to effectively eliminate or control pathogens in food? uses multiple approaches to effectively eliminate or control pathogens in food.

phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.