Modern firearms use the same principles as muzzleloading firearms. The ignition and burning of gunpowder create pressure. This pressure propels projectile(s) down the bore and out of the muzzle. The first modern firearms used black powder. Since about 1890, modern firearms are designed to use smokeless gunpowder. Smokeless gunpowder creates greater pressures and should not be used in firearms designed for black powder. Watch what happens when the trigger is squeezed on this bolt action rifle.
Answer:
Rights in the United States is the sum total of relationships related to the enforcement of human rights in the United States and the enforcement of U.S. human rights policies in territories around the world. presence or intervention of the United States. At the same time, it is also possible to understand the issues of concern for the United States in the exercise of human rights. Human rights in the United States are protected by the Constitution and later constitutions, international treaties, passed by the United States Congress, the body that establishes states and elections. [1] However, in the process of state management as well as the implementation of a number of international policies, the United States must also have some citations related to the implementation of human rights like feedback on how to apply it. apply the human rights criteria set to a different country. [2]
Both females and males have 46 chromosomes. When they have children, 23 of each parents chromosomes go together to make 46 chromosomes so the child can live, without all chromosomes their can be health issues.
Answer:
Plague is a disease that affects humans and other mammals and it is caused by the bacterium, Yersinia pestis.
Explanation:
HIV can be transmitted from one person to another person by contact between infected saliva and an open wound.
Further explanation:
Transmission of HIV:
A person can get HIV by coming into direct contact with certain body fluids from a person who is suffering from the disease.
These body fluids include
- Blood
- Rectal fluid
- Vaginal fluid
- Breast milk
- Saliva
When these fluids having HIV come in contact with the bloodstream of a person who is HIV negative through a mucous membrane ( which is present in the vagina, mouth, rectum, or on the tip of the penis ); open sore or cut, or by direct injection.
Activities by which HIV spread from person to person:
HIV spread by specific activities. In the United States, HIV is commonly spread by following method:
Sex with a person having HIV. Sharing the injection drug equipments for example needles with a person having HIV.
While the less common methods of spread of HIV are
From a mother to a child during birth, pregnancy or breast feeding. The use of HIV medicines has lowered the risk of transmission of HIV from mother to child in the United States.
Answer details
Subject: Health
Level: High school
Keywords
- Transmission of HIV
- Activities by which HIV spread from person to person
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