Answer:
Ozone
Explanation:
Ozone is a secondary photochemical contaminant, that is, it is formed from primary pollutants emitted into the atmosphere (mainly nitrogen oxides and volatile organic compounds) in the presence of solar radiation.
The photochemical formation of ozone in a given region is the result of a complex chemical process in which, from its precursors (nitrogen oxides and volatile organic compounds), a multiplicity of different species intervene, interacting with each other according to different reactions, resulting in a highly nonlinear final balance. A transcendental consequence of this nonlinear chemistry is that in a given region, and depending on the initial conditions of departure, the action on the different precursors can have very variable consequences, it being possible that it leads both to an increase and a decrease of ozone concentrations.
This makes short-term measures to reduce air pollution in a certain area, of a restrictive type (such as limiting the operation of heat generators, restricting the circulation of vehicles, regulating traffic to make it more fluid, restricting certain industries and activities) they are not as effective with ozone as with other types of pollutants, as they are a secondary type pollutant and may even in some cases produce a counterproductive effect: for example a drastic reduction in traffic, causing a decrease in NOx levels in the atmosphere, can prevent the decrease of ozone levels that had previously formed.
In the fight against ozone it is necessary to apply medium and long-term measures aimed at limiting emissions of ozone precursor pollutants into the atmosphere.
They do not serve short term strategies. Medium-long term strategies for the reduction of ozone precursors must be devised:
- Less polluting vehicles (NOx, VOCs)
- Use of public transport (NOx, VOCs)
- Energy saving (NOx)
- Use of non-polluting energies (NOx)
- Reduction of solvent use (VOCs).
Regular human body cells contain a total of 46 chromosomes. Therefore, because of meiosis, sperm cells contain _23___ chromosomes.
Regular human body cells, also known as somatic cells, contain 46 chromosomes. These cells undergo meiosis to produce gametes or sex cells, which include sperm cells, each having 23 chromosomes.
In biology, the regular cells that make up the human body, commonly known as somatic cells, contain 46 chromosomes which is characterized as diploid (2n). These somatic cells undergo a process called meiosis, a type of cell division that reduces the number of chromosomes by half, producing gametes or sex cells (i.e., eggs in females and sperm in males). During meiosis, a single diploid cell divides twice to produce four haploid cells. Therefore, human sperm cells, being a type of gamete, contain 23 chromosomes, rendering them as being haploid (1n).
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B. Magnetic Shifting
C. Circumpolar current
D) Obliquity
Answer:
I will go with the letter B
Influent BOD: 310 mg/l
Influent TSS: 210 mg/l
Aerbay: 110' x 15' x 12 feet deep (operating level of the tank is 10')
Aerbay MLSS (mixed liquer suspended solids) 2,800 mg/l
Effluent BOD: 2.5 mg/l
Effluent TSS: 1.5 mg/l
Answer:
2884.17 lbs
Explanation:
Data provided:
Influent BOD = 310 mg/l
Influent TSS = 210 mg/l
Dimensions of Aerbay = 110' × 15' × 12'
Operating level of the tank = 10'
thus,
The operating volume of aerbay = 110 × 15 × 10 = 16500 ft³
also,
1 ft³ = 7.48052 gallons
Thus,
16500 ft³ = 16500 × 7.48052 gallons = 123428.58 gallons
Now,
Aerbay MLSS (mixed liquor suspended solids) = 2,800 mg/l
Therefore,
Pounds of solids under aeration
= Operating volume of aerbay × concentration of aerbay MLSS
also,
1 mg/L = 8. 3454 × 10⁻⁶ lbs/gallon
thus,
Pounds of solids under aeration
= 123428.58 gallons × ( 2800 × 8. 3454 × 10⁻⁶ lbs/gallon )
or
= 2884.17 lbs
Answer:
Tectonic plates and Continental drift
Explanation:
We know that those who perform the movements of the crust are the tectonic plates, which are made not only by the continents, but also by the ocean floor. These plates move slowly over the mantle, moving away or approaching.
The lithosphere or earth's crust is the outermost part, above the mantle, the more viscous part that is overheated and causes the crust to move.
These movements are proven by techniques and studies and the use of satellites that with the aid of laser beam are able to identify and measure the displacement of tectonic plates and the movement of continents.
Answer:
Homestead Act
population increase
gold discovery
Explanation:
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