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it has been useful
because all the stars in a cluster are about the same age and distance from the Earth
Mutations are unnatural changes in the body or behavior. They are not always bad. For instance, the skin of the poison tree frog is not really bad at all. It rubs itself on poison leaves and mutated itself not to be affected.
microscope or telescope
mutations are useful but not all the time itis 99 percent are bad
Only neutral mutations are useful for molecular clocks because they accumulate in the DNA of different species at the same rate, while other mutations do not.
How is caenorhabditis elegans useful in studying genetics?
Because without mutations, selective breeding would be almost impossible.
The study of Antarctica is useful tous because the more we know about antarctica, the better we can protect it. We can also look for new species of plants and animals
...transform the breed accordingly.
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because they are :)
Marine sediment is useful in studying past climates because the coral and similar things give clues to scientists.
EM spectrum involves all radiations of different wavelengths. This has been very useful in studying various things in the field of science. Certain range of wavelengths are also very important in critical analytical techniques.
Models are useful in science, because it is easier for some to understand then words.