Explanation:
Contamination can have undesirable consequences in real experiments, some of them are related to the feelings that may arise in the research participants, the contamination bias reduces the differences between the research groups, and can cause a comparison between the treatments of each different group, the which can generate conflicts and rivalries on the part of groups that consider themselves to be inferior to others. These contamination-related problems can significantly interfere with the research results.
Most cultures had written tablets, writings, papers, etc that had dates and those were kept somewhere safe so we have it now and authors write them in textbooks that historians read
Answer:
on grounds of 'Equal Protection' laws of the 14th Amendment.
Explanation:
Both Brown V. Board of Education and parents involved in Community Schools v. Seattle presented their case on grounds of 'Equal Protection' laws of the 14th Amendment.
In Brown V. Board of Education, the court ruled that 'separate but equal' was an unconstitutional provision and that the practice of segregation was 'inherently unequal'. It further ruled out that these unequal provisions violated the equal protection laws.
Similarly, the parents involved in Community Schools v. Seattle claimed and argued that racial tiebreaker in district schools subjugated and infringed 'Equal Protection' laws of the 14th Amendment.
Though the initial plan of the racial tiebreaker system was to prevent racial imbalance in schools, the court adjudged that the system was unconstitutional because it, more or less, contributed to unequal opportunity in getting admissions.
Premier Li Keqiang called for “mass entrepreneurship and innovation” and made it the leading agenda of China's national economic strategy. ... China has grown to become the world's second-largest economy in merely three decades, and entrepreneurship has been identified as a key driver of China's fast growth.
hope this helps
A person walking because there moving which is mechanical energy.
