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.
The correct answer to this open question is the following.
By 1776, the majority of American colonist truly supported independence from Great Britain. Indeed, the Declaration of Independence was issued on July 4, 1776, during the Revolutionary War.
People form the colonies were angry with the English monarchy due to the heavy taxation without voice and representation in the British Parliament. Taxes such as the Stamp Act, the Sugar Act or the Tea Act were big causes that started the Revolutionary War.
<span>Regulation of internal processes regardless of what is happening externally is is called </span>Homeostasis.
The regulation is aimed to make our situation stayed the same as what we are used to. For example, if you're used to be in a cool temperature, your body will respond extremely to hotter temperature until you bring your body back to the cool temperature.
B, i believe, it wouldn’t be D or A because both of those are on the positive side of an government.