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Anettt [7]
4 years ago
10

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

Biology
2 answers:
Westkost [7]4 years ago
4 0
ANSWER------->All of these!<---------
tatuchka [14]4 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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There are two alleles, B and b, at a gene locus in a population at Hardy-Weinberg equilibrium. The relative frequency of the dom
viva [34]

Answer:

210

Explanation:

Frequency of dominant allele is represented by "p"

and frequency of recessive allele is represented by "q"

Given

p = 0.7

Thus,

q = 1-p\\q = 1 - 0.7 \\q = 0.3\\

As per Hardy Weinberg's second equation of equilibrium -

p^2 + q^ 2 + 2pq = 1\\

Substituting the given values in above equation, we get -

0.7^ 2+ 0.3^2 + 2pq = 1\\2pq = 1- 0.49-0.09\\2pq = 0.42

So the total number of heterozygous individual is equal to

0.42 * 500\\= 210

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4 years ago
The idea that action or behavior is entirely influenced by external forces rather than internal will is called __________. Deter
schepotkina [342]

Answer: <u><em>behavioral</em></u>

Explanation: <u><em>If i'm right Mark Me brain, give 5 stars and a thank you</em></u>

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3 0
3 years ago
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I need help with a project. I'll give brainliest. What is a stimulus? I can't get a good enough answer lol
vladimir2022 [97]

Answer:

a thing or event that evokes a specific functional reaction in an organ or tissue

a thing that rouses activity or energy in someone or something; a spur or incentive

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6 0
2 years ago
Water is essential for survival. It is important to understand the factors that affect water balance and the best sources to hel
Ludmilka [50]

Answer:

2-Water helps maintain body temperature.

3-Diuretics like alcohol and some medications can cause the body to lose water.

Explanation:

Dehydration occurs when the amount of what loss is more than the amount taken. And we lose water in many ways therefore taking water on a regular basis is important to replace the fluids lost and keep the body functioning.

Water Maintains the Body Temperature

During high temperature, the body cools itself naturally by sweating and by sweating a large amount of water is lost. So when enough water is not taken, there will be less production of sweating thereby causing the body's temperature to rise.

Alcohol Causes Water Loss

Taking excess alcohol can result to dehydration because the hormone called anti-diuretic (while alcohol is diuretic) is used to reabsorb water by the body and alcohol in the body depletes the production of this hormone. The body loses more water than normal with a reduced amount of anti-diuretic in the body. Excessive intake of alcohol can also cause vomiting, which depletes the body of fluids and can cause further dehydration.

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3 years ago
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Compounds that give color and taste to foods are called _____. a. proteins b. toxins c. lipids d. phytochemicals e. fibers
Mandarinka [93]

<u>Phytochemicals</u> are the compounds which gives color and taste to the food.

Explanation:

Phytochemicals are chemicals which occur naturally in plants which enhance taste or color when added to food. They are commonly found in vegetables, fruits, whole grains, nuts, seeds and beans.  

These are the unique chemicals that give carrots their bright orange color, the searing hotness to the peppers, the bright blue color to the blueberries, the unique flavor to onions, etc.  

There are many types of phytochemicals like carotenoids (carrots), flavinoids (apple), anthocyanins (berries), polyphenols (tea), reservatrol (wine), sulfides (onion), isothiocyanates (cabbage), quercetin (apple), proanthocyanidins (grapes), terpenes (cherries), leutins (green leaves) etc.  

Phytochemicals are natural chemicals which behave like antioxidants and prevent many diseases like cancer.

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3 years ago
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