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Because the scientific method means thinking of a hypothesis and proving a cause and effect in nature. If there is no control, then you can not prove the hypothesis of the cause and effect because you can not prove that your experiment caused the effect. If you have a theory that pepsi causes grass to grow, and with no control you manage to show that your lawn grew grass, how could you ever say that it was the pepsi that caused the growth unless your next door neighboors's yard died during the same time?
Scientists had to use pigs blood because it contained what they needed to make Photofrin. Photofrin is a drug to help cancer patients.
Oh yes, many times, scientists can help decide from what time period artifacts are from. Also, scientists may be needed to help study the artifacts...
None. Building a nuclear power station is a job for engineers.
All you need for life forms (most simple forms) is amino acids. They have actually been created by scientists.
many differnet scientists doing expiraments that prove the hypothesis to be true-then it becomes a theory
The scientific method is the name of this process. It begins with an observation, followed by a hypothesis, then you conduct an experiment and make observations then update your hypothesis if needed, and the cycle goes on again.
Heat from inside the Earth creates the energy to move plates using convection
cause and effect
A hypothesis is an "educated guess". An example of how it could be used: John needed to test his hypothesis about molecular degenaration.
A hypothesis is interesting when it is plausible. If you are well informed about the situation for which some hypothesis is needed, then you have a chance of coming up with a believable hypothesis. A very implausible hypothesis might be funny, but it would not really be an interesting hypothesis, insofar as it would be immediately dismissed other than as a subject of comedy.
An experiment is designed to test the hypothesis. To create an experiment, you have to first think of the what materials are needed, and then develop a procedure.
as many as needed to prove or disprove it
Could you explain why these qualities would be needed inyour chosen job
We could test our hypothesis by means of experimentation, Sorry if you didn't had the information you needed. I didn't understand your question.
what u need to form a awesome hypothesis is research & statement of the problem. There might be some more so look it up!
It is a conclusion,variable,a hypothesis,procedure,and data.