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Anettt [7]
3 years ago
10

Which of the following demonstrate the environmental advantages of secondary and tertiary treatment of wastewater?

Biology
2 answers:
Westkost [7]3 years ago
4 0
ANSWER------->All of these!<---------
tatuchka [14]3 years ago
3 0

Ans. (D) All of these.

Sewage treatment is defined as the process that removes contaminants from the municipal wastewater, having industrial and household wastewater, including sludge.

The secondary treatment of wastewater involves removal of colloidal and dissolve organic compounds. These compounds require oxygen for their breakdown processes. Thus, removal of these compounds decrease the BOD (biological oxygen demand) of water.

the tertiary treatment includes processes that improves the quality of treated water before releasing it to environment. It involves removal of excess nutrients present in wastewater, such as phosphorus and nitrogen as these nutrients enhance growth of algae and cause algal bloom.

Tertiary treatment also includes addition of disinfectants to remove microorganisms present in it.

Thus, the correct answer is option (D).

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You inoculate two tubes of liquid culture medium with 100 bacterial cells and incubate one tube at 37°C and the other at 55°C. A
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Answer:

thermophile.

Explanation:

A thermophile is a kind of bacteria that belongs to the Archaea Domain and they are the kind of animals that can live in a region of high or extreme temperature. There has been a research on a kind of thermophile which is known as Methanopyrus kandleri which can exist in an extreme temperature of up to 500° C.

So, if we take a look at the question again we can see that after 48 hours and at 37°C 20,000 bacteria per milliliter are already in the tube and at more higher temperature of 55°C we have 1,568,000 bacteria per milliliter which means that at higher temperature more of the bacterial is produced.

5 0
3 years ago
Name two properties of a good marker and explain why good markers are important.
Semenov [28]

Answer:

The overview is defined in the clarification section elsewhere here, and according to the particular circumstance.

Explanation:

Including genetic mapping as well as tracing the characteristics of hereditary disorders, genetic markers are valuable.

Basic DNA sequence determination for chromosomes.

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3 0
2 years ago
What is the correct order of organization in animals?
Goryan [66]

Answer:

D is rhe answer of rhis question.

Explanation:

collection of cells make tissue, collection of tissues form organ, similarly group of organs combine to form a system and when these systems combine it forms a whole body of organism.

4 0
3 years ago
Read 2 more answers
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