3. Scientists have to work very hard and make many sacrifices for years, to achieve success in their experiments. Why?
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Answer:
Experiments may not always work or give results. One has to keep trying, without being sure of the desired result. ... Hence, scientists have to work very hard and make many sacrifices for years, to achieve success in their experiments.
a scientist has to search and discover new information and knowledge was zero she/ he has to create an experiment decide what tools and materials will be needed and sometimes make the tools are material that are not available experiments experiments may not always work or give. one has to keep trying without being sure of the desired result. it isn't made thousand filled atoms before he invited the the light bulb. it makes use of constant effort determination and sufficient resources to achieve success in experiment. hence, scientists have to work hard make many sacrifices for your to achieve success in their experiments.