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erica [24]
2 years ago
10

Which of the following best describes why ddt is classified as a persistent organic pollutant.

SAT
1 answer:
Ostrovityanka [42]2 years ago
5 0

The reasons why DDT is classified as a persistent organic pollutant are;

  • DDT can be used to control diseases, such as malaria and typhus, that are spread by insects.
  • DDT is detected in food worldwide and the general human population is most commonly exposed to the toxin through food.

Persistent Organic Pollutants  can be regarded as toxic substances which are made up of organic chemical compounds.

These are industrial chemicals such as;

  • PCBs
  • pesticides like DDT.

DDT is classified as a persistent organic pollutant because of it's usefulness in control diseases and it is been found in food stuff across the globe.

Learn more about DDT at;

brainly.com/question/14154063

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The image produced by an object is –10. 0 cm from a concave mirror that has a focal length of 5. 0 cm. The distance of the objec
Anon25 [30]

The distance of the object from the mirror is 3cm.

To calculate the distance of the object from the mirror, we make use of the mirror formula

<h3>Mirror formula</h3>
  • 1/f = (1/u)+(1/v)............ Equation 1

Where:

  • f = Focal length of the mirror
  • v = image distance
  • u = object distance.

Using the real is positive convention,

Given:

  • f = 5 cm
  • v = -10 cm

Substitute these values into equation 1 and solve for u

  • 1/5 = (-1/10)+(1/u)
  • 1/5+(1/10) = 1/u
  • 1/u = (2+1)/10
  • 1/u = 3/10
  • u = 10/3
  • u = 3.33
  • u = 3 cm

Hence, The distance of the object from the mirror is 3cm.

Learn more about mirror formula here: brainly.com/question/26257987

7 0
2 years ago
Select the correct answer.
Amanda [17]

Answer:

a

Explanation:

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3 years ago
Could anyone please help me with Q2
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