What is the difference between science and non-science

Science provide answers to the questions based on the set of experiments. Scientific observations must exhibit consistency across the repeated experiments.

Non science can be defined as the theories that are not questioned till date. A set of rules and principles that are followed from decades and are never questioned.

There are many renewal of facts when science is considered but in case of non science there is no renewal of facts and thoughts.

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.

i know can you plzz me with this question im sorry i didt answer your question i just need hel.