Medications can be tested on cell cultures instead of being injected into patients unnecessarily.
Cancer cells continue to grow in the cultures uncontrollably allowing scientists to test multiple medications on the cancer cells.
A team of scientists has consistently gotten the same unexpected results from a set of experiments. Then "Peer review of the scientific methods and data analysis" may helps the scientists to ensure the reliability of the results.
<u>Answer:</u> Option D
<u>Explanation:</u>
The roots of achieving unexpected results lie or depend on scientific methods used and analysis of data performed for acquiring results. Therefore when experiment results into unexpected readings researcher need to give a review of entire method and analysis.
Although rest other points like publication of results, discussing with friends and family members or removal of inconsistent data may or may not help depends upon conditions but reviewing helps as observed in many cases , because one must have performed unintentionally or intentionally an error while going through methods.
Answer:
four billion years ago the earth had a layer of ozone gas
The correct answer should probably be Natural selection. Those elephants could not adapt to the environment unlike those in Asia and Africa and eventually became extinct.
