Answer:
On the earth ,living and non-living organism is present.Living organism like human,animal,trees etc.Non living organism like air ,soil,water etc.
In the living world there exits a diversity of living organism.Due to availability of water and other things on the earth, human or animal can spend life.That is why earth is called living world.
On the other hand ,life is not possible on the Mars currently.There is a lack of water, which makes of building block and energy source for power,that is why life is not possible on Mars.But lots of scientist are studying about Mars and exploring about the existence of life on mars.
Answer:
<em>Hello, Combustion occurs when fossil fuels are burned, and the elements in the fossil fuels oxidize, or combine with oxygen. When coal is burned, the carbon oxidizes to form carbon dioxide, or CO2. Hope That Helps!</em>
<em>From SusieLouielove.</em>
Answer:
3 Countries with Petroleum
<em>1. Iran</em>
<em>2. Iraq</em>
<em>3. Kuwait</em>
3 Countries with Gold
<em>1. China</em>
<em>2. Russia</em>
<em>3. Australia</em>
Explanation:
1. Iraq's petroleum industry is very important for its economy. Before its <em>international embargo,</em> it became a major exporter of crude oil.
2. Iran has one of the largest petroleum reserves in the world. Just like Iraq, it also became a major exporter of crude oil. However, due to wars and sanctions, export revenue declined.
3. Kuwait is a tiny country that is <em>rich in oil.</em> It's largest industry is<em> "petroleum industry," </em>and it is owned by the government.
4. China is considered to be the<em> largest gold-producer in the world</em>. Although it only has a few gold reserves, many people are into <em>gold-mining.</em>
5. Next to China is Russia. It is second when it comes to the accumulation of gold, yet it is only in<em> 6th position</em> when it comes to gold reserve.
6. Australia is perceived to overtake China's position in the coming years as the largest producer of gold in the world. This is because of Australia's<em> cost-effective mining </em>and<u> plans for major expansion.</u>