The Beaufort scale is a measure that relates wind speed to observed conditions. The intention is to be practically useful to mariners.
when precise generalization to a larger population is not necessary and the focus group participants and the larger population are relatively heterogeneous
Science Safety Rules, such as WHMIS (Workplace Hazardous Materials Information System) are important because, as the name suggests, they help keep you safe by making you take necessary precautions to avoid injury when conducting an experiment.
Much of what scientists learn cannot be used -- it's called research, and in research, every wrong answer leads you one step closer to the right one.Here are more opinions:It isn't necessary but it is very helpful. You never know what will be useful sometime in your life. Anything you learn, even if it's not science, can turn out to be useful.Though it is true most of the stuff you learn in science class is helpful (or at least gives you more knowledge of specific things), not all of it will be used in your everyday life, or even at all. For example, if you don't have a job that works with DNA, you won't have to use/apply the knowledge of separating alleles.It is your choice. If you think it's useful, it's useful. If you don't, it won't. But I think it's useful.
It is all about safety! If you don't follow the safety rules in some experience, the experimenter could be gravely injured or even killed. DON'T SKIP ANY SAFETY PRECAUTIONS!!! Better to be over-cautious than to be dead...
"to promote the advancement of science and the useful arts."
Under the Navigation Rules, it is OK to break the rules when it is absolutely necessary to avoid a collision.
When absolutely necessary to avoid a collision.
I haven't found it necessary but it is useful in case you have to get medical treatment.
It is necessary because without the safety rules, an experiment could go wrong and cause damage or seriously injure someone.
Rules can be useful in any situation. There are either correct or incorrect approaches to anything, and rules can help people to discern better approaches.
Rules can be useful in any situation. There are either correct or incorrect approaches to anything, and rules can help people to discern better approaches.
Many things are not necessary. Some of them, like fast cars, serve useful purposes.
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Parallel structure is not part of grammar, except to the extent that there are syntactic rules, like Conjunction Reduction, that apply to structures that are syntactically parallel. They're always optional rules, though, and there's no grammatical requirement to use parallel structures. They're awfully useful, though, as you point out -BrainQuiz
The Constitution has the laws and rules so yes it was very necessary to create the constitution.
It depends on what you call useful, but probably topsoil because it holds nutrients necessary for growing plants.