Q.1 Rivers from land, add mineral to the sea water. discuss how?
Q.2 How can we prevent the loss of the top soil?
Q.3 Fertile soil has a lots of humus. Why?
Q.4 How do fossil fuels caused air pollution?
Q.5 Why step farming is common in hills?
Answers
Answered by
5
1.Due to heavy rains and hoods the unprotected top soil gets washed into the streams and rivers. Feat moving water removes the top soil of the fields and near the river banks and carries it away with it.
2.By keeping soil covered.
3.The Fertile soil contains lots of microorganisms which decompose the complex dead bodies of animals and plants into simpler substance called Humus.
4.Most fossil fuels are burned to turn into energy, and the gasses released into the air by burning, in turn causes air and water pollution. Gases released by the burning and combustion of fossil fuels include carbon monoxide, nitrogen oxides, sulfur oxides and hydrocarbons. In the air, these gases becomes a carcinogen, which can be inhaled and can also mix with falling rain to form acid rain.
5.Step farming is more commonly known as terracing. In agriculture, a terrace is a leveled section of a hilly cultivated area, designed as a method of soil conservation to slow or prevent the rapid surface runoff of irrigation water.
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2.By keeping soil covered.
3.The Fertile soil contains lots of microorganisms which decompose the complex dead bodies of animals and plants into simpler substance called Humus.
4.Most fossil fuels are burned to turn into energy, and the gasses released into the air by burning, in turn causes air and water pollution. Gases released by the burning and combustion of fossil fuels include carbon monoxide, nitrogen oxides, sulfur oxides and hydrocarbons. In the air, these gases becomes a carcinogen, which can be inhaled and can also mix with falling rain to form acid rain.
5.Step farming is more commonly known as terracing. In agriculture, a terrace is a leveled section of a hilly cultivated area, designed as a method of soil conservation to slow or prevent the rapid surface runoff of irrigation water.
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Answered by
2
1.Water is capable of dissolving a large number of substances. As water flows over the rocks containing soluble minerals, some of them get dissolved in the water. Thus, rivers carry many nutrients from land to the sea.
2.
Keep soil covered year-round. ...
Plant trees to prevent landslides. ...
Reduce tillage. ...
Protect weak crops with strip cropping. ...
Practice wet season spelling. ...
Control downhill runoff with flumes. ...
Turn a hillside into terraces.
3.
Fertile soil are rich in organisms that decompose dead organic matter into humus. Humus gives minerals, absorbs water and makes soil porous.
4.
Most of this air pollution we causeresults from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles. Carbon dioxide (CO2) is a good indicator of how muchfossil fuel is burned and how much of other pollutants are emitted as a result.
5.
Step farming also called as contour farming. Normally in hill areas there will be land slides.due tk this soil erosion will occur. Soil erosion will leads to leaching of soil nutrients. To avoid this step farming followed in those areas.
hope helpful.....
2.
Keep soil covered year-round. ...
Plant trees to prevent landslides. ...
Reduce tillage. ...
Protect weak crops with strip cropping. ...
Practice wet season spelling. ...
Control downhill runoff with flumes. ...
Turn a hillside into terraces.
3.
Fertile soil are rich in organisms that decompose dead organic matter into humus. Humus gives minerals, absorbs water and makes soil porous.
4.
Most of this air pollution we causeresults from the burning of fossil fuels, such as coal, oil, natural gas, and gasoline to produce electricity and power our vehicles. Carbon dioxide (CO2) is a good indicator of how muchfossil fuel is burned and how much of other pollutants are emitted as a result.
5.
Step farming also called as contour farming. Normally in hill areas there will be land slides.due tk this soil erosion will occur. Soil erosion will leads to leaching of soil nutrients. To avoid this step farming followed in those areas.
hope helpful.....
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