(a) How can renewable energy benefit the environment?
(b) What are some problems with renewable resources?
(c) What does pH of soil mean? What happens when soil pH is too high or too low?
Answers
Answer:
(A)Environmental and economic benefits of using renewable energy include: Generating energy that produces no greenhouse gas emissions from fossil fuels and reduces some types of air pollution. Diversifying energy supply and reducing dependence on imported fuels.
(B)Here are some disadvantages to using renewables over traditional fuel sources.
>Higher upfront cost. While you can save money by using renewable energy, the technologies are typically more expensive upfront than traditional energy generators.
>Intermittency.
>Storage capabilities.
>Geographic limitations.
(C)Soil pH is a measure of the acidity or alkalinity of the soil. A pH value is actually a measure of hydrogen ion concentration. Because hydrogen ion concentration varies over a wide range, a logarithmic scale (pH) is used: for a pH decrease of 1, the acidity increases by a factor of 10.A pH reading that is too high or low will lead to a loss of these microorganisms, which will result in a less healthy soil overall. In addition, pH affects the solubility and potency of certain toxic chemicals, such as aluminum, which can be taken up by plants if the pH is off.