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Many people feel that blood should be donated for free. Paying money encourages people who should not be donating (drug users) to give blood to finance their habits and people who need money to donate too often and damage their health.
Biologists.
Science in the world is the process by which people accumulate knowledge in which they can place a high and often measurable degree of confident.
Their reasons are personal. Usually ethically, scientifically or otherwise.
Probably. It depends on your specific school. You should ask your guidance counselor questions like this. At my high school, only one science course was required in order to graduate. There was a slight stigma associated with the "General Science" class (it was usually referred to as "science for dummies"), so most people who didn't want to take more than one science class but also didn't want to take "General Science" took Biology instead. They could alternatively have taken Physics or Chemistry, but these were widely regarded as being more difficult.
Many people feel that blood should be donated for free. Paying money encourages people who should not be donating (drug users) to give blood to finance their habits and people who need money to donate too often and damage their health.
science cannot answer questions about what people should do
Yes. It is a project of donating hair to people with cancer.
Trying hard should make average people better not just because they are learning science although learning science may inspire people to do better.
Many people are donating money to help rebuild buildings & help the sick & injured. Most donating is being done online but some people are donating through games like FarmVille by buying Japanese special items.
You should have learned that other people, who do not know you, cannot work out from a distance, what you learned in science.
Donating tons of money.
because they can't help themselves
Science has indeed stated that people should not smoke. There is no uncertainty about it.
Ray Bradbury felt that science fiction was the only literature that dealt with how people should or should not handle technology and that everyone should read it.
The aid donating process tends to lack transparency. This makes people skeptical about whether their money is being used for the declared purpose.
Technology in Fluidics.