Answer:
resources are scarce so economies should make decisions between multiple ends and scarce resources
Explanation:
Answer:
Option D, marked the most important change in the U.S. Constitution since the Bill of Rights, is the right answer.
Explanation:
Adopted on 9th July 1868, Amendment Fourteenth to the U.S. Constitution was one of the Reconstruction Amendments. This amendment conferred citizenship and equal civil and constitutional rights to the African American community and slaves got a release from slavery following the Civil War in America. In this way, this amendment provided the community of African Americans with citizenship and equal protection of the laws.
Due to this, the Fourteenth Amendment marked the most vital change in the Constitution of the United States since the Bill of Rights.
Answer:
The roots of Jim Crow laws began as early as 1865, immediately following the ratification of the 13th Amendment, which abolished slavery in the United States.
Explanation:
The 3Rs by Russell and Burch are known to be the "alternative methods" to improve the treatment of laboratory animals, at the same time to advance the quality of science that uses animals for studies.
The 3Rs are Replacement, Reduction, and Refinement. Replacement is defined as minimizing the pain and suffering of the animals used in research. Reduction is for reducing the number of animals being used, and using healthier animals. Replacement is using alternative to animals such as tissue cultures and computer models.
