Answer:Emergency Quota Law of 1921
In 1921, there was a drastic reduction in immigration levels from other countries, principally Southern and Eastern Europe.
Explanation:
Long title An Act to limit the immigration of aliens into the United States.
Nicknames Per Centum Limit Act
Enacted by the 67th United States Congress
Effective May 19, 1921
I believe it's the <span>Treaty of Brest-Litovsk, correct me if I'm wrong. </span>
nausea
Explanation:
nausea is the main symptom of heat stroke from the other following options.
Answer:
Bottle neck effect
Explanation:
Any disaster could lead to sudden decrease in population of an organism thereby decreasing its gene pool. Such disasters triggers genetic drift commonly termed as bottleneck effect.
Due to decrease in the population, the frequency of occurrence of any specific trait reduces as the frequency of alleles responsible for any certain trait also reduces.
Since habitat loss will cause reduction in both space and resources for giant pandas and hence a large number of pandas will die thereby reducing the gene pool and hence frequency of an allele.