Draw a typical growth curve for a pure culture of bacteria, label and explain in
ID: 803611 • Letter: D
Question
Draw a typical growth curve for a pure culture of bacteria, label and explain in detail what each phase of the curve describes. Match, with good explanation, the growth curve of world population since inception of human species with the bacteria growth curve. What is QAPP? List and explain the collection and storage specifications for a QAPP. Where and why is ozone an air pollutant? Write about its benefits Where is ozone depletion taking place? What is responsible for it? Explain Unstable, Stable and Neutral stability of air. Use mathematical expressions to support your answers. What is the difference between EPA-designated primary and secondary air pollutants? List all types of EPA designated primary pollutants and three secondary air pollutants. What is photochemical smog? Use a set of simplified chemical reactions to explain its formation. All these are true about the atmosphere except Protects us from harmful radiation Affect our climate Affect our weather Oxygen is the most abundant in its composition Variation of temperature with height in the Tropospshere is similar to that of the Stratosphere Mesosphere Thermosphere Tropopause is the accumulation and adverse effects of contaminants or pollutants on human health and welfare. Pollutants are ubiquitous because They can be everywhere The can be In form of solid liquid and gas (a) and (b) All of the aboveExplanation / Answer
2. Where and why is ozone an air pollutant ? Write about its benefits. Where is ozone depletion taking place? What is responsible for it?
Answer: Ground level ozone (lower) layer is considered as air pollutant. Ground level ozone “bad ozone” layer is formed by chemical reaction between oxygen and nitrogen and volatile compounds in presence of sunlight.
The Upper layer of ozone is good and protect us from harmful ultra-voilet rays.
The greatest ozone depletion taking place in Arctic pole stratosphere
Industrial pollution, vehicular traffic, chloroflourocarbons (CFCs) and other chemical pollutants.
Answer: d.
that of the
a. Stratosphere
b. Mesosphere
c. Thermosphere
d. Tropopause
Answer: d.
3. Air Pollution is the accumulation and adverse effects of contaminants or pollutants on human health and welfare
4. Pollutants are ubiquitous because
a. They can be everywhere
b.They can be in form of solid, liquid and gas
c. a) and b)
d. All of the above
Answer : d.
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