The Civil Rights Act banned racial discrimination.
The 15th Amendment granted African Americans the right to vote. In the U.S. Supreme Court case Plessy v. Ferguson, it was ruled that racially separate facilities, if equal, did not violate the Constitution. Finally, in the U. S. Supreme Court case Brown v. Board of Education, it was ruled that racial segregation in public schools are unconstitutional.
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Vaccines prevent the spread of contagious, dangerous, and deadly diseases. These include measles, polio, mumps, chicken pox, whooping cough, diphtheria, and HPV. The first vaccine discovered was the smallpox vaccine. Smallpox was a deadly illness.
A vaccine activates our immune system without making us sick. Many dangerous infectious diseases can be prevented in this simple and effective way. A vaccine activates our immune system without making us sick.
Vaccines contain weakened or inactive parts of a particular organism (antigen) that triggers an immune response within the body. Newer vaccines contain the blueprint for producing antigens rather than the antigen itself.
Explanation:
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Answer: His arms muscles work in pairs so that one contracts while the other relaxes as he climbs up.
Explanation: when we exercise one muscle, there is usually another muscle that isn't the target of the exercise but it helps us maintain the form by doing the opposite movement. For example, when we do a bicep curl, the muscle that we are working is the biceps, and it contracts, but at the same time, the triceps relaxes, this is called antagonist muscles. The same thing happens when a rock climber climbs up the rock wall, the biceps contract as he pulls up and the triceps relax at the same time.
Chocolate was enjoyed in Mesoamerica for many centuries. The Olmecs, the Mayans and the Aztecs all enjoyed cocoa beans. However, chocolate was often consumed as a drink, and it was usually spicy.
Chocolate travelled to Europe after the conquest of the Aztecs, and it became very popular among the European high classes. One reason was the fact that Cortez brought cacao seeds to the Spanish court. Another reason for its popularity was that chocolate began to be consumed as a sweet, not a spiciy drink.