Title: Menggantung Harapan
Media: Pencil on paper
Size: A3 (30x40 cm)
2010















Title: Berpikir tentang alam
Media: Pencil color on paper
Size: A4
2010
















Title: Untitled
Media: Pencil on paper
Size: A4
2010









Title: Tarian Alam
Media: Poster Color
Size: 50x60 cm
2009















Title: Global Warming
Media: Poster color on paper
Size: A3 (30x40 cm)
2010















Title: Manten
Media: Poster Color
Size: 50x60 cm
2009

Poles Apart

Antarctica is the coldest area in the world, it is nearly twice the size of the United States and it name was coined to mean opposite to the Arctic. The climate in Antarctica and Arctic is different because in the Arctic, The landmasses are grouped around the ice covered Arctic ocean.Because of this difference, animals and plants of the two areas are very different.
At both poles, daily temperatures may drop far below the monthly mean. The world's record low temperature was recorded in 1960 at the American South Pole Station. Antarctica is the storehouse of about 85 percent of the total world supply of ice and if Antarctica's ice is melted , coastal areas of the world would be flooded.

Issac Newton

Issac Newton is a famous scientist and inventor who write a book that explained of universal gravitation and the tittle is principia. Newton was born in England in 1642. He stated to go to college in 1661 at Trinity College Cambridge University. Newton was productive many invention in Woolsthorpe. He was made director of English mint in 1699.
Newton was died in 1727 and is buried in Westminster Abbey.Many invention and brilliant ideas realized by Newton. Many people believe that a falling apple gave Newton the idea of the law of universal gravitation.

The "Green Revolution"

Green revolution is a big transition which swept the agriculture world, food production doubled, new types of grain, and the extensive use of chemicals and farm machinery is the result of it. But, Green Revolution methods no longer appear to be successful, because many farmers cannot afford to buy all the chemicals and equipment that very expensive to get maximum production, this condition being social and political conflict. Landless poor people increases because the problem.Because of that, needed new methods of the Green Revolution that better.

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Photosynthesis Process

Photosynthesis is a process that converts carbon dioxide into organic compounds, using the energy from sunlight. All of green plant, some algae (kingdom protista), and many species of bacteria do this activity to support their life. Photosynthetic organisms are called photoautotrophs, since it allows them to create their own food. Photosynthesis process needs some material from nature such us water, light sun, minerals from the soil, and nutrition. Photosynthesis is vital for life on earth, because from this process, green plant can produce oxygen and sugars.

Photosynthesis process always begins when energy from light is absorbed by proteins called photosynthetic reaction centers that contain chlorophylls. In plants, these proteins are held inside organelles called chloroplast, while in bacteria they are embedded in the plasma membrane. Some of the light energy gathered by chlorophylls is stored in the form of adenosine triphosphate (ATP). The rest of the energy is use to remove electrons from a substance such us water. These electrons are then used in the reactions that turn carbon dioxide into organic compounds, especially sugars and oxygen. In plants, algae, and cyanobacteria this is done by a sequence of reactions called the calvin cycle.
And this is the formula for the type of photosynthesis that occurs in plants:

6H₂O + 6CO₂ ----------> C₆H₁₂O₆+ 6O₂

It is clear that photosynthesis always produce sugar and oxygen in it process. Photosynthesis is vital for life on earth, because oxygen from photosynthesis process is very important to human and animal. It keeps us, everybody, and everything else alive. Thanks for the oxygen!

By: Tjia An Bing

Minimizing Birth Rate

Birth rate is the number of births each year. It is counted per 1 thousand. So like 1 birth would mean 1 thousand births the birth and death rates can also effect whether the country is an less economically developed country or a more economically developed country, which is shown as sparse or dense. Generally, birth rate is calculated using live birth counts from a universal system of registration of births, deaths, and marriages, and population counts from a cencus. Birth rate is also commonly used to calculate population growth. It is combined with death rates and migration rates to calculate population growth.

There are many factor that affecting birth rate, that is pro-natalist policies and anti-natalist policies from government, existing age-sex structure, availability of family planning services, female literacy levels, economic prosperity (although in theory when the economy is doing well, families can afford to have more children, in practice the higher the economic prosperity the lower the birth rate), poverty levels (children can be seen as an economic resource in developing countries as they can earn money), infant mortality rate (a family may have more children if a country's infant mortality rate is high as it is likely some of those children will die), urbanization, and typical age of marriage.

In a big country, uncontrolled birth rate can make a serious problem, that is population explosion.
Because of that, needed some ways to minimizing birth rate in a big country. The first way to minimizing birth rate is family planning program, birth rate can decreased, because number of children in a family is limited.
The second way is tow age of marriage and abortion. but, abortion have become a dilemma for countries with large number of citizens, on one hand, it can control the birth rate but on the other hand, it brings terrible consequences, especially for women's health.

It is clear that uncontrolled birth rate can make a serious problem and when a country faces the problems of population explosion, the government should find methods to solve it. But since no ways or methods of contraception is one hundred percent effective and successful.