who are major contributors of realism?
koch
Oswald Theodore AveryHe was one of the founding fathers of immunochemistry (the study of the chemical aspects of immunology) and a major contributor to the scientific evolution of microbiology.
Stroke and heart disease
railroads.
one major contributor is moving water
In the DNA of your genes.
photosynthsis
CFC's are a major problem. It is because they deplete the ozone.
A parents sex chromosomes hold DNA. A parents DNA is passed onto the child.
Max Weber
DNA test.