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Changes during puberty

Puberty happens to every young person some time after the age of 8. It is the transition into woman/manhood when the sex organs growand develop and the body becomes ready and able to reproduce. These changes can make you feel proud and happy, and they can also make you feel confused orembarrassed.

  • Your height, weight, and muscles develop
  • Your sex organs grow
  • You become fertile
  • The glands in your skin become more active and can give you spots
  • Your sweat glands develop
  • Hair starts to grow under your arms and around your genitals
  • You may experience rapid mood swings
  • You may begin to be attracted towards members of the opposite or same sex

Changes that affect girls:

  • Your breasts develop and may feel painful as they grow
  • Your nipples begin to stand out
  • Your hips get rounder
  • Your ovaries start to produce ova or egg cells
  • Later in puberty, menstruation starts

Changes that affect boys:

  • Your chest and shoulders develop
  • Your voice deepens
  • Hairs start growing on your face and may grow on your chest
  • Your penis and testicles grow larger
  • Your testicles drop into the scrotum and start to produce sperm
  • You may have erections without warning
  • You will experience your first ejaculation when liquid called semen comes out of your penis (this can also happen when you are asleep.)

The a-b-c approach

Abstaining from sexual activity, faithfulness, and condom use are three behaviors that can prevent or reduce the likelihood ofsexual transmission of HIV infection. These behaviors are often considered together as the "ABCs" of HIV prevention - A for abstinence (or delayed sexual initiation among youth), B for being faithful (or reducing one's number of sexual partners), and C for condom use, especially for casual sexual activity and other high-risk situations.

Understanding and promoting these behaviors are key elements in combating the spread of HIV/AIDS. Based on a growing body ofevidence from a number of developing countries, USAID supports the ABC approach because it can target and balance A, B, and C interventionsaccording to the needs of different at-risk populations and the specific circumstances of a particular country confronting the epidemic.

Background: The Decline of HIV Prevalence in Uganda

As one of the world's earliest success stories in confronting AIDS - and probably the most dramatic - Uganda experiencedsubstantial declines in HIV prevalence during the 1990s. According to estimates by the U.S. Census Bureau and UNAIDS, national prevalence peakedat around 15 percent in 1991 and fell to 5 percent by 2001. Among pregnant women in urban areas, prevalence declined from a high of approximately 30percent to about 10 percent, while among rural pregnant women it fell from more than 10 to less than 5 percent. Uganda's vivid decline in HIV prevalenceremains unique worldwide. In other sub-Saharan African countries with epidemics of comparable severity and longevity, similar declines have yetto occur. Accordingly, Uganda's success has been the subject of intense study and analysis.

Questions & Answers

what is phylogeny
Odigie Reply
evolutionary history and relationship of an organism or group of organisms
AI-Robot
ok
Deng
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Hajah Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
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HOW CAN MAN ORGAN FUNCTION
Alfred Reply
the diagram of the digestive system
Assiatu Reply
allimentary cannel
Ogenrwot
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William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
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Josephine Reply
Genetics is the study of heredity
Misack
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Misack
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Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
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Yousuf Reply
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
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Shaker Reply
list any five characteristics of the blood cells
Shaker
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Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
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Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
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ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
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Source:  OpenStax, Hiv-aids for educators. OpenStax CNX. Mar 07, 2006 Download for free at http://cnx.org/content/col10329/1.6
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