1. What is the difference between using crossbreeding or using genetic modificat
ID: 110938 • Letter: 1
Question
1. What is the difference between using crossbreeding or using genetic modification to improve crops and livestock? What is your opinion on the use of GMOs? Why?
2. What is the danger of the loss of agrobiodiversity?
3. Describe one type of soil degradation and a method for preventing it.
4. Give one way that water could be used more efficiently in each of the following: agriculture, industry, homes.
5. Besides reducing water waste, what are two ways to increase our supply or freshwater? Give one drawback of each method.
Explanation / Answer
ANSWER:
1) Cross-pollination is just a method wherever 2 sexually compatible plants happen to cross by virtue of spore, that is that the male contribution to the present method, being carried by wind or insects or probably by water – no mattermethod – to fertilize another member of identical species. So, cross-pollination happens all the time. and that ishouldn’t say “same species” as a result of typically plants will cross that barrier while not abundant bother.
GMOs
70 % of food in our stores carry this technology, or a minimum of has product that came through this technology. You’ll notice that ninety % of surface area of soy, corn, cotton and canola area unit all gram plants. There are some gramsugar beets, papaya and a few squash, however that’s terribly minor surface area. You’ll conjointly notice that there aren’t that several husbandry crops accessible as gram – therefore things like tomatoes or strawberries simplyaren’t accessible. And that’s just because of the regulative method is therefore high. within the future you may see that modification as we start to know more the security of those technologies, and the way they will be applied to unravel important issues in our society.
2) The loss of robust cops and livestock adapted to their surrounding eco-systems (soil, climate) and the subsequent use of genetically homogenous high yield varieties and high performance animals (kept in high-techsheds) makes necessary numerous unecological inputs: These varieties and races arenot only more vulnerable, often prone to diseases caused by breeding (“burn out syndrome”),but they dependent on high and stable inputs of (fossil) energy, fertilizers and pesticides in the case of plants, and food, energy, and pharmaceuticals in the case of animals. The loss of locally adapted traditional varieties and races also impacts on the surrounding eco-system and wild biodiversity. On the other hand, the protection of landraces and indigenous livestock breeds is worthwhile despite their lower yields since they often possess valuable traits such as disease and pest resistance and are better adapted to harsh conditions and poor quality feed, which are qualities desirable for low-input, sustainable agriculture.
3) When plants (trees & shrubs) ar cleared from a web site, soil is exposed to daylight and also the eating away effects of wind and water. Soil aeration is hyperbolic and also the rate of weathering will increase.
TYPES OF SOIL DEGRADATION
Loss of soil fertility (see lesson on nutrition)
Erosion
Salinity
As erosion is caused by the results of wind and water, then management ways ar usually geared toward modifying these effects. a number of the foremost common management ways ar listed below.
Prevention of soil detachment by the utilization of canopy materials like plants (ie. trees, mulches, stubbles, crops).
Crop production techniques (e.g. fertilizing), to push plant growth and thence surface cowl.
4) Water is used in homes for hygiene and landscape.water is used in industries for manufacturing goods,dispose of waste and generate power. water is used in agriculture for irrigation.
5) The main purpose of large dams is to capture and store runoff and release it as needed for controlling floods, producing hydroelectric power, and supplying water for irrigation and for towns and cities. Reservoirs also provide recreational activities. Increases the annual reliable runoff available for human use. Can reduce downstream flow and prevent it from reaching the sea as a part of the hydrologic cycle. Often impairs some of the important ecological and economic services rivers provide.
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