1. So that during the experiment, you don't have to waste your time in figuring out what to do.
2. So that the instructions are clear and if there are any misconceptions, you can clear them out BEFORE the experiment.
3. To avoid trouble or risky scenarios.
4. It allows replication, where other scientist perform your experiment to ensure your findings are correct.
5. To avoid error, such as adding too much of salt into water.
Answer:
Your answer is C) Chelation therapy
Explanation:
Chelation therapy is a method for removing heavy metals, such as mercury or lead, from blood. It's one of the standard treatments for many types of metal poisoning. Hope this helped :)
A small rocky body orbiting the sun
A positive human impact on the environment occurs when a person takes action to improve society, nature and its resources.<span> Acting positively, even in a small manner, has a major impact on the environment, especially when it is done consistently.
</span>Humans can effect<span> the </span>ecosystem<span> in a </span>negative<span> way ,by pollution, waste dumping</span><span>, over hunting of animals,over fishing,industrial gases,energy ...</span><span>
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