Proteins on the boood determine a person’s blood type. antibodies( i’m not completely sure, i haven’t done this yet in bio) in the blood attack foreign blood not compatible with the antigens on the blood
Science can not solve all of our problems. While scientific understanding can help battle things like disease, hunger, and poverty when applied properly, it does not do so completely and automatically. Furthermore, there are many areas of life where science can have little impact.
