Answer:
510.1 million km²
Explanation:
To find the surface area of the Earth we have to use the formula of 4*Pi*radius squared. The radius of the Earth is approximately 6,371 kilometers.
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Answer:
<u>I and Il only, crystallization in magma and dissolved in water</u>.
Explanation:
- Most of the minerals are formed due to the crystallization of lava or molten matter in due course of time when it slowly cools in contact with the land surface as in rapid cooling there is no time for the formation of crystals.
- Minerals are then formed from the evaporated of the solution a mix of substances dissolved in another. For example deposits of table salts.
- If the magma erupts to the surface and becomes a lava it tends to cool quickly and small crystals are formed. Depending upon the number of gases and chemical composition of lava.
Answer:
1. If developed due to the practice of farming, cultivation of the soil for the growing of crops. Similarly, individuals have learned how to use animal to provide food, wool, and other necessities.
2. Obviously, the practice of agriculture is essential in sustaining human life. However, these practices often leave negative impact on the environment. The most prominent of these effects includes climate change, deforestation, pollution, and other unfortunate events.
3. This is due to the fact that different areas harvest different crops, evidently leading to various different foods.
4. Agriculture differs in those regions for developing ones evidently don't have as much experience as those that are already established. It will take a deal of time for them to develop similar foods as the other already developed regions.
5 + 6 Don't know.
Answer:
The answer to the question "How many of the processes result in the release of oxygen into the atmosphere?" is only one of them does it: <em>photosynthesis</em>.
Explanation:
The photosynthesis occurs mostly inside plants. During this process, the plant needs <em>carbon dioxide</em>, light and water in order to release oxygen into the atmosphere.
The respiration is a process where oxygen is consumed and carbon dioxide is released into the atmosphere.
The combustion involves two participants: a fuel and an oxidizer. During this process, oxygen is consumed too and new chemical substances are created. Also, it generates heat during the process.
The polymerization is a process where simple molecules form chains and become more complex and bigger molecules. There are different types of this reaction and some of them use oxygen when they are forming bigger molecules. To conclude, this process do not release oxygen into the atmosphere.
The nitrification is a process that is made mainly by bacteria. During this process, those organisms need to use oxygen from the environment to be able to transform ammonia to nitrate. This is an important step to enrich the soil, but it do not release oxygen.
The industrial fixation is not a natural process. During this synthetic reaction, atmospheric nitrogen is transformed into nitrogen oxides or ammonium ions that bacteria can use in <em>nitrification. </em>It consumes oxygen too.
