Parasitism is when one organism benefits at the cost of it's host. Like fleas on a dog or intestinal parasites to livestock. Fleas and intestinal worms get food and a nice place to livr, while the dogs and the livestock are being leeched off of and malnourished.
Commensalism is when one organism benefits, while the host is left unharmed- but also doesn't really get anything in return, unlike mutualism. Like a shark and remoras (those fish with suction-cup heads & hitchhike). Sharks aren't hurt, but the remoras get free transportation and access to food scraps.
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According to the research, the correct option is contour farming. It is the agricultural technique which involves turning the soil over and parallel to the hill in order to prevent soil erosion.
<h3>What is contour farming?</h3>
This is a soil conservation practice and to reduce erosion, it consists of arranging crop rows across the slope, following the contour lines.
Specifically, this practice helps to reduce water runoff and soil drag, since when planting the rows of crops against the slope, the other tasks of the crop, such as cleaning and hilling, are done in the same way and each furrow or row of the crop oppose the passage of rainwater that fails to filter into the soil, slowing down its speed, and thus there is less soil and nutrient runoff.
Therefore, we can conclude that according to the research, the correct option is contour farming. It is the agricultural technique which involves turning the soil over and parallel to the hill in order to prevent soil erosion.
Learn more about contour farming here: brainly.com/question/11877099
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You are correct the answer is nuclear fusion
Answer:
The arrow points from the organism being eaten to the organism that eats it.
Explanation:
<span>It is false that the intestinal microflora synthesize Vitamin D. Intestinal Microflora is a helpful bacteria that helps in the process of digestion. This also helps the body in protecting against infection and develops immune system and this synthesis of vitamins gives nutrition to body.</span>
