SCIENCE
BOTANY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They eat the bugs that harm the plants.
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They eat debris which cleans the water.
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They produce waste which acts as nutrients for the water
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They urinate in the water producing ammonia for plants.
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Detailed explanation-1: -"The fish kept in a fish tank excrete nitrogenous waste into the water. The waste acts as nutrient source for plants. The nutrient-rich water is pumped into the water bed where plant roots are dipped in and they absorb the nutrients.
Detailed explanation-2: -Fish waste is rich in nitrogen, phosphorus, calcium and vitamins. By applying fish fertiliser, we can increase the good microbes in the soil, so the soil gets healthier and nutrients become more readily available to plants.
Detailed explanation-3: -Fish waste contains nitrogen and minerals that could support the growth of lactic acid bacteria (LAB), making it a good candidate as the nutrient source for lactic acid fermentation.
Detailed explanation-4: -The process of making compost is by entering 2 kg of fish waste into a porous plastic container with a moisture content of 15.08% which has been mashed and left for 2 weeks (fish waste is used as a starter). Then mixed into a bucket containing the remaining vegetables and fruits.
Detailed explanation-5: -Aquarium water accumulates nitrogen, phosphorus, potassium and ammonia, plus beneficial micro-organisms that process these materials. You may recognize these as ingredients in plant fertilizer and soil amendments.