b. a hope that democracy would spread.
Explanation:
Nelson Mandela is probably the most recognizable person from Africa and one of the most influential people from this continent. He was a human rights fighter and his main goal was that South Africa and later the rest of Africa gets rid off the European rule, democracy is established, everyone to have the same rights and opportunities.
This was a partial success. Mandela became a president of South Africa and the situation quickly changed in the country. The Africans were ruling their own country in their own way and that was seen as a great achievement. On the other hand, numerous groups emerged and were allowed to exist which were openly spreading hatred and were attacking and murdering the white people in the country. One of the people involved in this was actually Nelson Mandela's wife which was actually responsible for burning people alive. It was not democracy by no means, instead it seemed that the cards have just switched.
Lot of African countries saw this as an opportunity to become democratic and rule themselves. Pretty much all of the African countries indeed started to rule themselves, and Africa became truly African. The problem was that in most of those countries there was not a democracy. The white people were attacked. Their properties taken without compensation. They were forced to live the countries, and many were even murdered. A good example is Zimbabwe.
The bicarbonate-carbonic acid buffer system
A blood test called an arterial blood gases (ABG) test analyzes the pH, oxygen (O2), and carbon dioxide (CO2) levels in an artery. The purpose of the test is to evaluate the patient's lungs' ability to eliminate carbon dioxide from the blood and transport oxygen into it.
The buffer between carbonic acid (H2C03) and bicarbonate (HCO3-) is essential for preserving the acid-base balance in the blood. Sodium bicarbonate (NaHCO3) serves as a weak base and H2CO3 as a weak acid.
Bicarbonate makes weak acids from strong acids, and strong bases from weak acids generate neutral solutions.
By controlling the generation of bicarbonate, the kidneys support the bicarbonate buffer system. The lungs help by controlling the amount of carbonic acid produced.
Learn more about the bicarbonate buffer system here:
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Answer:
The formula of the mechanical advantage(MA) of a lever is given as MA = load/effort. Another form of this ma formula is MA = Effort Arm/Load Arm = EA/LA. Example: Calculate the mechanical advantage if 500 N force is needed to overcome the load of 1000 N.
The answer is B i do so belive
Cant see the image sorry. it says i have to download it
