OntsBetween 2014 and 2016, more than 25,000 children in Flint, Michigan, drank
water that was contaminated with lead from lead pipes. During this time, the
city claimed the water was safe to drink. Which of the following is an action
the city could have taken to keep the water safe?
O
A. Regularly test the water in residents' homes.
O
B. Ignore residents' requests to test the water.
O
C. Have city employees drink the water publicly.
D. Monitor the water quality in a neighboring area.
O

Answers

Answer 1

Answer:

Answer: Option A

Explanation:

The water should regularly be checked after a certain period of time. There are many chances that the water that is suitable for drinking gets polluted which needs to have a watch on it.

The water that is supplied in the residential area should be checked time to time so that the contamination in the water can be known on time and precautions should be taken according to them.

Hence, the correct answer is option A

Answer 2

Answer:

Answer:

Explanation:

regularly testing the waters in the residents home will definitely improve water purity in the neighborhood

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Which of the following is not a typical way for a person to catch a disease?A. From pathogens in boiled water. B. From pathogens in the air. C. From pathogens in poorly cooked food. D. From physical contact with an infected person. Imagine you were investigating the cause of a mysterious disease. Which of the following would not be important to determine? A. The food that the diseased people recently ate. B. Who the diseased people were in contact with recently. C. Where the diseased people had recently been. D. How wealthy the diseased people were. Where would a disease transmitted by person-to-person contact be most likely to spread quickly? A. In a remote region, where contact between people is rare. B. In a rural farming community, where neighbors live miles apart. C. In a crowded city. D. In a medical lab, where people wear protective gear (face masks, gloves, etc.) and equipment is regularly sterilized. What type of disease transmission is most likely represented by the graph shown below? Graph of disease spread A. Person to person. B. Foodborne. C. Airborne. D. Foodborne and airborne. Which of the following patterns is most likely to indicate a foodborne illness? A. All of the victims worked in the same office. B. All of the victims were friends. C. All of the victims shopped at the same supermarket. D. All of the victims had the same symptoms.

scientist noticed that a dark-colored peppered moth is more visible on a light-colored background than a light-colored peppered moth. He wonders, “Does this difference in visibility affect the survival rate of dark moths?” Which part of the scientific method does he need to carry out next?

Answers

yes lighter moths are more likely to not be seen by a bird but a dark moth on a light tree are more likely to be seen

5. How many hours of daylight are there in New York State on the following dates?a. March 21:
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c. September 23:
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Answers

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Which of the following statements is part of the cell theory?

Answers

Well the Cell Theory is:
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How do we know the frequency of a wave when we can't see it?

Answers

You find the frequency of a wave by V/WL.

normally, proto-oncogenes stimulate the cell cycle. What are oncogenes and how do they affect the cell cycle

Answers

Answer:

Oncogenes are mutated protooncogenes (see explanation below).

Explanation:

“Proto-oncogene” is the name given to various genes whose products stimulate cell proliferation. Examples may include growth factor receptors, and proteins involved in clearing cell cycle checkpoints. Mutations in a proto-oncogene may cause it to either become too rapidly transcribed and/or code for a product that functions in an unchecked manner. This may lead to unrestrained cell proliferation, a basic mechanism of cancer. When and if this mutation takes place, the proto-oncogene becomes known as an oncogene.

Final answer:

Oncogenes are altered versions of proto-oncogenes that can lead to uncontrolled cell growth, leading to cancer. They can produce too much or abnormal protein, upsetting the balance of cell division.

Explanation:

Oncogenes are genes which have the potential to cause cancer. In their normal state, they are referred to as proto-oncogenes, contributing to regular cell growth and division. However, when these genes are altered or mutated, they can become oncogenes that stimulate the cell cycle and lead to uncontrolled cell growth - a hallmark of cancer.

Typically, proto-oncogenes help regulate cell division and ensure that cells divide in a controlled way. However, various factors such as genetic mutations, can turn a proto-oncogene into an oncogene. These oncogenes can produce too much protein or abnormal protein, upsetting the regular balance of cell division and halting normal function. This often results in a cell growing and dividing too rapidly, which can lead to a cancerous tumor.

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A scientist is developing a computer model to determine the maximum population size, or carrying capacity, of eagles and other birds of prey in a forest ecosystem. The model should represent allthat affect the populations.

Answers

Final answer:

The scientist is developing a model to predict the maximum population of eagles a forest can support, known as the carrying capacity. Factors influencing this include food availability, predator presence, and human activities.

Explanation:

The scientist is essentially considering factors impacting the carrying capacity, or the maximum populationsize a forest ecosystem can sustain without degradation. Several factors will influence this, including the availability of food, the presence of predators and human activity.

For example, if the primary food source of the eagles dwindles, the carrying capacity of the eagles will decrease. Similarly, if the number of predators like wolves, which might prey on young or sick birds, increases, the eagle population may decrease. The same result could occur if human activity like logging or urban development encroaches upon the eagle's habitat.

In conclusion, when developing his model, the scientist needs to incorporate variables that account for fluctuations in food availability, predator populations, and human activities in the area.

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