Carbon is the basic building block of life . This is the reason carbon dating is effective, all living organisms contain carbon. Also, carbon is so important to life because virtually all molecules in the body contain carbon. ... For this reason it can form long chain molecules, each with different properties.
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Ancient Athenians developed the a form of democracy known as "Direct Democracy". Direct democracy is known as the first form of democracy.
A radioactive element with a half-life of 1,000 years, and starting mass of 20 grams, will need 2,000 years to decrease to 5 grams.
Explanation:
The radioactive elements all have a specific half-life. Each element's half-life is well known, and they are used by scientists of numerous fields as they are excellent for determining the age of a particular item, be it or organic or non-organic nature. In this case, we have a radioactive element with a half-life of 1,000 years, and starting mass of 20 grams.
The half-life basically means that half of the mass of an element is lost during a particular period of time. For the element in question we need to find out how much time will be needed for it to decrease to 5 grams. In order to get to the result, we just need to add 1,000 years on every decrease of half of the mass:
20/2 = 10
10/2 = 5
So in 1,000 years, the element in question will decrease to 10 grams, and in further 1,000 years (2,000 cumulatively) it will decrease to 5 grams.
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Answer:
Honk Kong
Explanation:
On July 1 1997 the United Kingdom officially returned Hong Kong and the area surrounding it to its traditional owner, China. Hong Kong has been part of China for a very long time, but during the imperialism, the European imperialist, including the British Empire, came in East Asia and started to take control over strategically important locations, and Hong Kong was one of those places. The British were not that interested about occupying the interior of China, but instead they were focused on the good ports, as they were the ones that generated the most profit. Hong Kong was one of those ports, but unlike the other ports that China got back into its territory, Hong Kong remained to be under the governing of the UK. With lot of tensions between the two sides, as well as the increasing international pressure, the UK finally decided to return Hong Kong and the surrounding area back to China in 1997.
Answer:
This problem should be worked on by the most developed countries as they have the biggest capacity, and after they get on the right way to help the developing countries and show them the way as to how to do it as well.
Explanation:
The carbon emissions that humanity is releasing into the atmosphere can not be attributed to only a few countries, but to most of the countries in the world. All countries that have some kind of industry contribute to the problem, though some countries much more than others.
In order for carbon emissions to decrease there should be a global collaboration. The most developed countries because they have the most finances and resources should lead the way and come up with solutions, and once they do this to help the developing countries with it so that they can also stop the carbon emissions.
Many countries are already on the right path, namely Germany, the Netherlands, France, the Scandinavian countries. The two biggest economies though, the US and China don't even want to hear about this because of their race for economic dominance, so it seems that reasoning the governments of these two countries will be the most important step for global turnaround.
