Can some please help me with 5,4,3,1.. I don’t understand the questions. How don
ID: 147048 • Letter: C
Question
Can some please help me with 5,4,3,1.. I don’t understand the questions. How don’t know how to answer this. It’s due in couple hours please. Thank you in advance. Prior to your laboratory, complete these questions: 1. Why are bacteria populations criticalto a soil's fertity(ts ability to support plant growth)? 2. Why is the abundance and diversity of soil organisms (such as macroinvertebrates and fungi) often higher when bacteria are more abundant and diverse? 3. Why do soil bacteria link strongly to human well-being? 4. How might adding i) a source of N (eg, fertilizer) or (i) a source of C (eg, mulch) influ- ence the abundance and diversity of bacteria living in a particular soil? How might the effects of adding either-or both- of these amendments (N and/or C) dif- fer depending on the source of the soil (e.g, soil from an Arizona desert vs. lowa corn field)? 5.
Explanation / Answer
Bacteria are important as they decompose various plants and other organic material and produce nutrients that enrich the soil . Even nitrogen can be fixed from plants or from air directly and soil can be nourished leading to an increase in soil fertility .
When bacterial diversity is higher the diversity of other organisms is also more because all of them act in a homogeneous cycle to maintain the nutrient value of the soil. They interact with other organisms and produce substances which can increase their growth and also contribute to the plant growth or vice verma maintaining an equilibrium. Many bacteria will lead to increase in other organisms.
Basically the soil bacteria and their products ultimately reach the humans through plant consumption or food cycle . Many of them have been found to be probiotics and some improve our immunity and maintain the food cycles .
The last two questions totally depend on the nature of soil and the soil biomass. A soil which has more nitrogen fixing bacteria and fungi will utilise the nitrogen efficiently and adding nitrogen to the soil in appropriate amounts can increase the soil biomass and nutrition values . But adding too much of nitrogen can cause death of microbes and plants also so we have to take that in consideration . Soil helps in marinating both nitrogen and carbon cycle . Adding carbon to the soil can increase soil respiration . Soil carbon releases nutrient and cause growth and act as buffer . If more carbon is in soil then less may be present in atmosphere and help in decreasing carbon dioxide pollution.