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1.The period of time each day during which an organism receives illumination; day length.
2.The use of earthworms to convert organic waste into fertilizer.
3.The process of taming an animal and keeping it as a pet or on a farm.
4.repeated use of fertilizers on the same soil gradually alters the fertility of the soil, making it totally infertile and barren after some years. A soil test should be done every 3 to 4 years in order to avoid this and the farmers should switch to organic fertilizers.
Affects the Water Bodies: Excessive use of fertilizers causes eutrophication. This is when the harmful chemicals of the fertilizers are taken to the lakes and oceans due to rains as well as sewage. These chemical components decrease the oxygen level of the water and affect the aquatic flora and fauna. It causes deaths of fish and other plants in the water. Due to this polluted water being consumed by animals or even humans for drinking, it can cause harmful diseases. It is said that over 50% water bodies all over the world are already polluted due to this.
Causes Climate Change Across the Globe: Fertilizers mostly contain harmful chemicals like methane, ammonia, nitrogen and Carbon dioxide, which contributes to the increase in greenhouse gases, which is a main component in causing global warming, leading to the depletion of ozone layer.
The fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil.
The fertilizers used on plants contain harmful chemical fumes which affect the environment. They are mixed with the air and the birds and animals which breathe it are affected and prone to illnesses.
The fertilizers used on plants boost their growth, but the quality of produce which is yield is not very healthy as compared to the quality of produce which can be yield with natural fertilizers. Hence, it can be said that it increases the quantity of food produced but decreases the quality of food produced.
The plants which are given fertilizers do not live for too long compared to the plants which grow naturally. Hence, if big plantations are being grown with fertilizers, they are going to survive for lesser time compared to the naturally grown ones. Also, the soil will be filled with harmful chemicals, which will cause the harmful elements to mix with the ground water, thus polluting the water even before it is extracted from the ground for usage.
5.The process of an animal or plant breeding with an individual of another species or variety.
6.A large increase in crop production in developing countries achieved by the use of artificial fertilizers, pesticides, and high-yield crop varieties.
7.Advantages of mix cropping:
Farmers can keep their fields under continuous production.
There is reduction in the need of artificial fertilizers which can otherwise be expensive.
There is geographic mixing of crops; this can help slow the spread of pest and other diseases in the growing season.
It also reduces the effects of adverse weather conditions for the farmer as planting and harvest is at different times of the season.
There are more land to be farmed with the same amount of labor and machinery.
Disadvantages of mix cropping:
Some plant crops are very specific in the type of soil they need for maximum profits.
This type of farming system is done keeping in mind the needs of the soil and not the needs of the crop.
Choosy crops are not preferred in mixed farming practices.
Crops for mixed farming if not chosen properly, have chances of competition between the crops for nutrients.
It also may reduce the fertility of the soil as more than one crop is grown at a time in the same piece of land.
8.Macrominerals present in the body include Calcium, Potassium, Iron, Sodium and Magnesium to name a few. Iron is a constituent of Hemoglobin which is present in blood. Macrominerals are needed in more amounts, as compared to microminerals. Microminerals include Copper, Zinc, Cobalt, Chromium and Fluoride.
Micro nutrients - calcium , vitamin B12 , zinc , potassium.
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