The entire process of vertical farming relies on various technologies for maintaining appropriate conditions for plants. To clarify, if the farm loses electric power for just one day, it can affect production process and cause a huge loss of productivity and profit (LeBlanc, 2017). Lastly, there are some detractors who not agree with the innovation and point to the indoor farming's inefficiencies. Stan Cox, a former USDA biologist, mentioned that the amount of energy, resources, and the scale use in vertical farming will never be capable and sufficient to supply any percentage of food needs (Stella, 2017). Also, since most vertical farms have planned to construct in cities, urban people can easily access a food, and people who live on farms and rural communities might be disregarded.
One of the activities as mentioned above is damming of lakes for hydroelectricity. The water or the air around a hydropower dam is not polluted by it. Nevertheless, hydropower facilities do have significant environmental impacts on the environment, affecting land use, homes, and natural habitats. Another major impact is the disruption of the river’s flow downstream. This impedes the transportation of sediments downstream that is needed by downstream ecosystem (“internationalrivers”, n.d.).
For water- culture systems in which plants are grown directly in water, the plants are placed into a platform and held by cotton wool packed around the stem. Aggregate-culture systems with plants growing on hydroponic aggregate, has the plant held in mesh containers, another important hydroponic gardening supply, placed in the support platform. Hydroponic aggregate Plants growing in aggregate-culture hydroponic system use aggregate which is also known as litter or grow medium. This replaces the soil, making it one of the most important hydroponic gardening supplies. It must be inert, therefore, should not provide the plant with any nutrient whatsoever.
(NREL, 2001) Hydropower plants do not produce air emissions into the atmosphere but they can affect the water quality and natural habitats of wildlife animals. However, hydropower plants are now being designed and operated to minimise the impacts on the river. For example, by diverting a portion of the water flow around the dams to mimic the natural flow of the river but it is also reduced the power plant’s output. Other approaches such as improved turbines are also used to assist fish with their migration and lower the number of fish being killed. (NREL,
Hydropower plants have long been promoted as providing cheap energy and water supply and is the most efficient way of producing electricity as 90% is converted into electricity whereas fossil fuels are only 50 % efficient. On the other hand, Installing and running hydropower plants is really expensive for the governments as that requires a huge amount of energy which not all governments can afford. Dams can cause political conflicts. If a country build a large dam on a river which also passes through the neighboring country may cause serious political conflicts between the two countries, especially if its poor countries since the dam would block the water supply from the same river in the neighboring country. This was about to lead a war between the countries Sudan and Egypt.
Most small hydropower systems do not require the construction of a dam, but are rather run of river schemes. Small hydro in isolated systems may be also connected to grid, if available at a later date. Such integration with a grid shall improve the total benefits of hydropower projects and quantum shall be as per site-specific conditions. Comparative advantage of the small hydro has already resulted in a large number of these installations all over the world. The success of the small hydro option depends on careful selection and timely completion of the best sites.
Firstly, hydropower is fueled by water, so it's a clean and green resource. No fuel is burnt and therefore no pollutants are produced unlike power plants that burn fossil fuels, such as coal or natural gas and produce harmful pollutants such as nitrogen dioxide and sulfur dioxide in the air. It also doesn’t produce carbon dioxide; a greenhouse gas contributing to global warming. Secondly, it is a renewable resource as we cannot run out of water. Water is recycled on the earth naturally through the water cycle.
agricultural farmers. Nor will the newly planted trees be able to store the carbon dioxide which has been released prior to it having begun to grow. It would therefore be more realistic to encourage all parties involved in the process of deforestation to manage the resources of the forest in a sustainable way. This means that the usage of the methods of clear-cutting and burning would have to be eliminated if the forest ecosystem is to be able to remain intact. If certain trees need to be cut down, however, then theses should be replaced by enough young trees which can fill the same role to an equal extent as the ones which are cut down.
HYDRPONICS INTRODUCTION Hydroponics is a part of Hydroculture . Hydroculture is the growing of plants in the absence of soil, or an aquatic based environment/medium. Plant nutrients are supplied via water. The word "hydro" is a derivative of a Greek word which means water. And culture is the process involved.
Hydroponics does not use soil; instead the root system is supported using an inert medium such as perlite, rockwool, clay pellets, peat moss, or vermiculite. The basic premise behind hydroponics is to allow the plants roots to come in direct contact with the nutrient solution, while also having access to oxygen, which is essential for proper growth.