Body parts in the order they would process oxygen in the body

How can people get cancer? what types of cancer are there? plz i’ll mark u brainliest

Which of these following is necessary to resolve conflict

Ascientist introduced mutations in a gene sequence isolated from bacteria. study the sequence, and identify the steps where the mutations may affect the formation of proteins. in the sequence, black letters stand for protein coding regions and red letters stand for noncoding regions.