Dissolved oxygen (DO) levels of 6 ppm were recorded in a lake the day before a sewage spill. Three days later, the DO levels in the same location were measured to be 0.5 ppm. What is the probable cause of this change in DO?

A. Decreased water temperature caused a decrease in gas solubility.

B. Decreased turbidity due to the sewage caused an increase in photosynthetic algae.

C. Decreased oxygen is available due to bacterial decomposition of organic waste.

D. Decreased carbon dioxide is produced by photosynthetic algae.

E. Decreased nitrate levels eliminated a source of dissolved oxygen.

Answers

Answer 1
C.decreased oxygen is available due to bacteria decomposition of organic waste.

Related Questions

What is one skill students should practice to prepare for the arithmetic section of ACCUPLACER?

A.How to solve inequalities

B.How to solve operations with fractions and decimals

C.How to determine the accuracy of statistics

D.How to factor polynomials

Answers

B. How to solve operations with fractions and decimals

Hope this helps :)

ANSWER: How to solve operations with fractions and decimals

Approximately 5 million gallons of wastewater are treated in Hernando County, Florida, each day while 2.14 million gallons are reused. About what fraction of million gallons are reused?

A. one quarter
B. one third
C. one half
D. two-thirds
E. three-quarters

Answers

Approximately 5 million gallons of wastewater are treated each day while 2.14 million gallons are reused. The of million gallons reused is C.

The choices:
A. one quarter or .25
B. one third or .33
C. one half or .50
D. two-thirds or .667
E. three-quarters or .75

Solution:

Let x= fraction reused

X=2.14:5

X=2.14/5

X= .428

Since .75>.667>.50>.428>.33>.25

And >.428 is nearest to .50, therefore the answer is C.

All of the following should be included on the self stick labels you prepare before attending a college fair except
A. Year of graduation
B. Test scores
C. Phone number
D Major interests

Answers

B) test scores for apex :)

Answer: B. test scores

Explanation: took the test

You are in the leftmost lane on a one-way street, and are stopped at a red traffic light. The cross street is one-way from right to left. If the way is clear, you may

Proceed straight ahead on a red light.


Turn right on a red light, if no signs prohibit it.


Turn left on a red light, if no signs prohibit it.

Answers

You are in the leftmost lane on a one-way street, and are stopped at a red traffic light. The cross street is one-way from right to left. If the way is clear, you may Turn left on a red light, if no signs prohibit it. You cannot pass on the street in front of you, but you can pass in the street on your left side because it is just one way.

Lina chooses to switch to a new phone service provider because it offers an online payment system. What trend is she following?


simplicity

social media

self-service

community-based service

Answers

Users make payments electronically than in person. Electronic payments have been made to provide a secure internet transaction. It is usually in 4 categories namely credit card,debit card, micropayment system and electronic cash. The answer in the situation where Lina switch to new provider for the online payment system is due to self-service.

The answer would be Self Service, because she likes the convenience of doing it herself.

What parts of the nervous system work when solving a puzzle

Answers

your brain does that work

How many legal actions does the united states approach in a year?

Answers

Ask the United States they are the ones who approached it

Match each branch of science with a related career. A.Earth science B.Physical science C.Life science D.Space science. 1.Physicist 2.Astronaut 3.Hydrologist 4.Zoologist

Answers

A. Earth science         (3. Hydrologist)

 B.Physical science      (1. Physicist)

 C.Life science             (4. Zoologist)

 D.Space science          (2. Astronaut)

Below justify the relationship between the branches of science with the related career.

Hydrologists measure the properties of bodies of water and soil which comprise the earth.  They analyze the impacts of pollution, drought,  erosion, and other problems to our environment.

A physicist is an expert in physical science.

Zoologists are life scientists. They study animals, observe them in the laboratory and in their natural habitat.

An astronaut is a person trained by a human spaceflight program to pilot a spacecraft.

A3

D2

B4

C1

These are the answers by matching the letter and number

2. Fill in the chart below to show ways that income, gender, age, and ethnicity contribute to social inequality by affecting power, property, and prestige. In each cell of the chart, indicate one way the factor in the left-hand column may influence the factor listed across the top. Two cells have been filled in as examples. (10 points)


Power Property Prestige
Income Rich people influence policy by hiring lobbyists and donating to campaigns.










Gender















Age















Ethnicity









Stereotypes and prejudice can lower a person's prestige just because of his or her ethnicity.

Answers

GENDER
Males usually are paid more.

Age
Older people tend to get more respect

Ethinicity
Some people in certain races may be looked at differently.(Not all people, but maybe some)

Jeffery Brooks has just landed a job as the produce manager for a large grocery store. The store manager mentioned that last summer a group of students had calculated that the cross elasticity of demand between cantaloupes and water melons to be $1.10. Jeffery should know that this means

A) people like cantaloupes 10% more than water melons.

B) people like water melons 110% more than cantaloupes.

C) a 10% increase in the price of cantaloupes will decrease the quantity demanded of water melons by 11%.

D)a $1 increase in the cost of either product will decrease the quantity purchased by 110 units per day.

E) a 10% increase in the price of cantaloupes will increase the quantity demanded of water melons by 11%.

Answers

NOT: a 10% increase in the price of cantaloupes will decrease the quantity demanded of watermelons by 11%. is the answer

What do scientists mean when they say that there are critical periods for brain development? Why are these periods important?

Answers

A critical period is stage of maturation in an organism's lifespan during which the nervous system is sensitive to particular environmental stimuli. This period is very important because this would help or aide in an organism's survival. If, for some reason, an organism fails to receive the appropriate stimulus during this "critical period" it would be unlikely for the organism to learn a skill or trait.

An employer informs its employees that it will hold a substantial cash prize drawing for each work group at the end of each month in which all members of the work group comply with applicable safety rules, such as wearing required fall protection. Doug sustains a lost-time injury when he falls from a platform while not wearing required fall protection. Doug’s employer cancelled the cash prize drawing for Doug’s work group that month because Doug failed to wear required fall protection. The employer actively monitors its workforce for compliance with applicable work rules and cancels the cash prize drawings when it discovers work rule violations regardless of whether the employee who violated the work rule also reported an injury. Did the employer use an incentive program to retaliate against Doug?

Answers

No. The employer used the incentive program not to retaliate against Doug.  Employer canceled the cash prize drawing because Doug violated a legitimate work rule (not wearing a fall protection), and not because he reported a work-related injury. Occupational Safety and Health Administration or  OSHA encourages employers to enforce legitimate workplace safety rules, and the employer only complied with those rules and took consistent, appropriate corrective action when violations occur. It did not consider whether or not the employee who violated the rule also reported an injury.




Answer: no

Explanation: that person made me get the answer wrong, its no trust me

If the Costa Rican government sets the exchange rate at 10 colon per U.S. dollar, then
A. the supply of Costa Rican colones will increase.
B. the supply of Costa Rican colones will decrease.
C. the quantity supplied of Costa Rican colones will decrease.
D. the quantity supplied of Costa Rican colones will increase.
E.the quantity demanded of Costa Rican colones will decrease.

Answers

If the Costa Rican government sets the exchange rate at 10 colon per U.S. dollar, then
D. the quantity supplied of Costa Rican colones will increase.

Yet our distress comes from no failure of substance. We are stricken by no plague of locusts. Compared with the perils which our forefathers conquered because they believed and were not afraid, we have still much to be thankful for. Which of the following terms used in FDR's speech is a biblical allusion? A. plague of locusts B. thankful C. failure of substance D. distress

Answers

I believe your answer is A. plague of locusts

Which condition is a result of using an anaerobic digester?

Answers

i believe it is to Increase in land fertility due to the addition of the nitrogen and phosphorous by product
Answer:B increase in land fertility due to the addition of the nitrogen and phosphorous byproduct

Explanation:

ed

A visible streak of light which shows the path of rocky object which has entered Earth’s atmosphere is?

Answers

The answer is a meteor.
Meteors make flashing light when they enter the Earth's atmosphere. This is actually meteors on fire, because our atmosphere makes them burn when they come in contact, and crashes them under the pressure. This makes up for a beautiful sight on the night sky, and people often refer to the burning meteors as ''falling stars'', and make wishes as well.

How are students chosen to recieve lottery scholarships?

Answers

    Hello there!!

→I believe six students are chosen to receive the lottery scholarships.

{Hope that helps}

Answer:

Randomly

Explanation:

"lottery" should be pretty obvious

People in the united states are attracted to suburbs in part because suburbs are characterized by

Answers

Suburbs are normally characterized as the calm and peaceful life. The ideal place to raise your family. 

Suppose the SAT scores for reading vary normally with a mean µ= 475 and a standard deviation of sigma equals 100 Ten thousand students go through a training program to improve their score. The average SAT scores for the students are found to be larger than 475 and statistically significant with a p-value of 0.0028. Which of the following can be concluded?
We cannot say if the score improved at all. The average score is improved by training by at least 100 points The score must have been improved by a large number to produce such a small p-value. We cannot say by exactly how much the SAT reading score is improved, only that the observed improvement is unlikely to have arisen by chance. We cannot say by exactly how much the average score is raised.

Answers

Answer:

We can conclude that the average score is improved by training and that the observed improvement is unlikely to have arisen by chance, based on the p-value of 0.0028. However, we cannot say if the score improved at all or by exactly how much the SAT reading score is improved. We can only say that the average score is larger than 475, but we do not know by exactly how much it is raised.

Explanation:

Create an office policy for submitting claims to ensure compliance and risk reduction Can include a checklist of best practices for front office

Answers

·         Create written, up to date policies and procedures to ensure your practice is complying with all necessary regulations.

·         Designate a compliance officer to monitor compliance and to serve as a resource to the staff. To ensure practice is up to date.

·         Have well published standard and take corrective action when problems arise.

·         Monitor documentation to ensure compliance.

·         Create a training program to test staff knowledge and train appropriately and regularly.

·         Ensure that all documentation is complete, accurate, and timely and that it exists in the medical record for all physician and other professional services  

Is there a difference between interest groups and special-interest groups?

Answers

Special Interest Groups. Political Parties and Special Interest Groups are the two biggest types of organizations that influence the creation of new laws. ... Interest groups serve a similar purpose within the realm of politics, although there are some differences between them and the political party.

The image shows Fallingwater in Pennsylvania.
What is the significance of Fallingwater's incorporation with the environment?

Using specific visual and contextual evidence, explain how the location of Fallingwater addresses both humankind's unity and conflict with the natural world.

Answers

Fallingwater in Pennsylvania incorporates itself in the environment by not being too overbearing. The color usage of the structure leans on the side of natural, opting for a more peach and brick colors to blend in with the surrounding trees. The architecture is reminiscent of cliffsides.

The design respects nature but it also overs it up. The shadows caused by the overbearing ledges may affect the life of anything that uses the sun for energy such as plants. It is obvious that some trees were also needed to be cut down, although to a lesser impact.

In line 29,”effectual succor” is best paraphrased as:

Answers

Middle English speakers adapted "socour," the predecessor of "succor," from the Anglo-French sucors, which essentially had the same meaning as our modern word. "Sucors," in turn, derives from the Medieval Latin succursus, itself a derivative of the Latin verb succurrere, meaning "to run to the rescue or "to bring aid."

Advances in technology allow food products to be safely and quickly transported all over the world. true or false

Answers

True.

An example of this would be refrigerated cars/railroad carts.

When interviewing potential suppliers, you should always ask them _____.

Answers

The answer would be ask them questions such as What is the full product line of the suppliers.If they do have a minimum order or the payment terms. Also the total costs would be and if there are discounts like for bulk orders and what circumstances the prices will change and when do take ownership of the product and lastly if an insurance certificate is available.
When interviewing potential suppliers, you should always ask them questions if they have the enough amount of products that can be supplied in order to meet the demand of your custoners. Sometimes suppliers promise that they have but in time, they lack these supplies which can cause a decrease on your sales.

If you use money as a store of value, you would be
A. buying a new pair of shoes.
B. putting money in your college savings account.
C. comparing tuition costs for Princeton and Yale.
D. charging a new book on your credit card.
E. withdrawing $500 from your checking account.

Answers

Answer:

B. Putting money in your college savings account

Explanation:

The term store of value refers to something that can be saved, retrieved and exchanged at a later time without losing its purchasing power. Money, along with, for example, gold and silver, serves as a store of value. Putting money in our college savings account is a good example of using money this way. We do not need the said money at the moment, so we save it for later, once the time for college application arrives. The money will still have its value, its purchasing power, and we will still be able to use it even years later.

Help on this please! AP Psychology

Answers

The answer is a absolute threshold
The sound waves have to be strong enough to meet her absolute threshold. So A is your answer.

___ percent of men have reported experiencing a violent act by an intimate partner, while ____ percent of women have reported experiencing a violent act by an intimate partner.

Answers

15% for men 85% for women... Sheesh... I don't like that.

Nearly 41% of women and 26% of males reported having been physically abused, stalked, or subjected to contact intimate violence by an intimate partner during their lifetime.

Violence refers to the use of physical force or power with the intention to cause harm, injury, or damage to oneself, others, or property.

It can take various forms, including but not limited to physical violence (such as hitting, or kicking), intimate violence (such as intimate assault), emotional or psychological abuse, verbal abuse, threats, or intimidation.

Thus, a lifetime intimate partner was said to have physically abused, stalked, or engaged in contact intimate violence against nearly 41% of women and 26% of men.

For more details regarding violence, visit:

https://brainly.com/question/28424941

#SPJ2

There are _______ potential routes of drug administration. A. 16 B. 24 C. 7 D. 21

Answers

Sublingual, IV, IM, insufflation, Skin absorbtion, Plugging, inhalation, eye absorbtion, and of course, swallowing. Discounting Skin and eye absorbtion, youve got 7 so i would go with that.

The accuplacer tests cover all of the following except:

A. Reading
B. Math
C. English
D. Science

Answers

Answer:

D. Science. Is the right answer

Explanation:

ACCUPLACER is a series of tests that evaluate students' skills in reading, writing, and math to help college administrators place them in courses that match their skills.

Other Questions
Evaluate the expression 2x - (4y - 3) + 5xz, when x = -3, y = 2, and z = -1 Tonga is an archipelago of _____.A. volcanic islandsB. coral islandsC. high and low islandsD. atolls PLEASE HELP!!Mina positions her hands correctly to do the Heimlich maneuver. Next she pulls her hands inward then downward. How should she do the maneuver?A. inward then sidewaysB.sideways then inwardC.inward then upwardD.Upward then inward 1A. Nan and Soto are designing a coffee table using four inch tiles Nan uses 30 tiles and soto uses half as many how many total tiles did they use1B. If the area of the table is 36 inches by 24 inches will they have enough towels to cover the table if not how many more will they need2 different questions But they are related A system of equations consists of two lines. One line passes through (-1, 3) and (0, 1). The other line passes through (1, 4) and (0, 2). Determine of the system has no solution, one solution, or an infinite number of solutions. WHAT MIGHT HAPPEN IF THE CONSTITUTION ALLOWED STATE LAWS TO HAVE SUPREMACY OVER FEDERAL LAWS? Why did president roosevelt sent out the great fleet? Okay this is a new problem I need help with tryna set it up or whats the answer 1) A substance has a half life of 20 years. what percentage would be left after 40 years?2)After 4 half lifes of uranium, 10 grams of the uranium remains. how much uranium did you start with? How do you this?????? Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag the item to the trashcan. Click the trashcan to clear all your answers.T.A.= Why did the chicken hit her egg with an ax worksheet answers In living things, hydrolysis reactions result in the formation of What are the zeros of the function?f(x)=x^32x^23x A -3, 0, and 1 B3, 0, and 2 C1, 0, and 3 D2, 0, and 3 Which of these processes causes the release of water from living organisms into the atmosphere?A) photosynthesisB)precipitationC)transpiration The language used by the author in a story is called Imagery Diction Description Regardless of where people live, they are dependent on resources produced in a. rural areas. c. national parks. b. urban areas. d. wilderness areas What Is the Measure of Y41495161 What do we know to be the cause of the change of seasons (wordly wise) Read this excerpt from the speech No Compromise with the Evil of Slavery by William Lloyd Garrison. Based on the excerpt, which two statements reflect the authors views of the North and South? These are solemn times. It is not a struggle for national salvation; for the nation, as such, seems doomed beyond recovery. The reason why the South rules, and the North falls prostrate in servile terror, is simply this: with the South, the preservation of slavery is paramount to all other considerations above party success, denominational unity, pecuniary interest, legal integrity, and constitutional obligation. With the North, the preservation of the Union is placed above all other things above honor, justice, freedom, integrity of soul, the Decalogue and the Golden Rule the infinite God himself. All these she is ready to discard for the Union. Her devotion to it is the latest and the most terrible form of idolatry. The South insists on continuing the practice of slavery. The North will attempt to preserve the Union at any cost. The North makes a false assumption that Southern slavery will soon end. The South continually pushes to argue with the North.