Help me pleaseeeeee!!

Contaminated water is a type of water that is harmful to human beings due to the presence of harmful substances, pollutants, or impurities that make the water unsafe for drinking or other household uses. The characteristics of contaminated water can be identified through various indicators, which can either be physical, biological or chemical.

Physical indicators are visible and may include color, taste, and odor, while biological indicators are not visible and may include bacteria, viruses, and protozoa. Chemical indicators may include heavy metals, pesticides, and organic compounds, among others.

Physical Characteristics: Physical characteristics of contaminated water include cloudy or turbid appearance, unusual taste or odor, or discoloration of the water. The color may range from yellow to brown, blue to green, or even black.

Biological Characteristics: Biological characteristics of contaminated water include the presence of bacteria, viruses, or protozoa. These microorganisms can cause diseases such as diarrhea, typhoid, cholera, and dysentery.

Chemical Characteristics: Chemical characteristics of contaminated water include the presence of heavy metals such as lead, arsenic, or cadmium. Pesticides and fertilizers can also contaminate water and affect human health. Organic compounds like benzene and toluene can also be present in contaminated water, which can lead to health problems such as cancer and nerve damage.

Therefore, it is important to test water sources regularly to identify and monitor any contaminants that may be present. This can help prevent health problems associated with the use of contaminated water.

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The ocean absorbs nitrogen gas from the atmosphere. In open-ocean areas with low concentrations of nutrients (“oligotrophic” regions), some of this nitrogen is taken up by microbes and transformed into various chemical compounds.

Answer:

hemoglobin is the red pigment

Answer:

Carbon , Hydrogen, Oxygen

Carbon , Hydrogen, Oxygen

Carbon , Hydrogen, Oxygen, Nitrogen

Carbon , Hydrogen, Oxygen, Nitrogen, Phosphorous

Explanation:

Answer:

toxic buildup.

Explanation:

The excretory system has to do with excreting perilous, harmful materials from the body. If it malfunctions, these materials stay in the body. Therefore, the result of a malfunctioning excretory system would be toxic buildup.

Answer:

The correct answer is -

A. 3.9% people in the population would be expected to be heterozygous carriers

Explanation:

The genotype frequency for the CF affected is 1/2,500,

= 1/2500

= 0.004. This is equal to q^2

here q = frequency of recessive alleles combination or CF people. (H-W equation => p^2+q^2+2pq=1)

The allele frequency is the square root of q^2 value, which equals 0.02. The frequency of the dominant allele or p would be

1 - 0.02 = 0.98 (p+q = 1)

The frequency for the CF combinantion =0.004

the dominant or unaffected people genotype

= (098)^2

= 0.96;

and for the heterozygote, it is

= 2pq

=2(0.98)(0.02)

= 0.039 or 3.9%

Considering alcohol consumption, Lei may have thiamine deficiency. Of the symptoms presented, sore throat is not caused by thiamine deficiency.

Thiamine is one of the most important vitamins in the body and is found in foods such as green vegetables, fruits, fish, liver, meat, and cereals. Its deficiency can cause tiredness, irritability, loss of memory and appetite, sleep disturbances, abdominal discomfort and weight loss.

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Answer:

The tissue type in the respiratory system complements its function by providing the structural support and specialized features necessary for efficient gas exchange. The respiratory system is responsible for bringing oxygen into the body and removing carbon dioxide, and different tissue types in the respiratory system are adapted to perform these functions effectively.

The lungs are the primary organ of the respiratory system, and they are made up of several different tissue types. The outermost layer of the lungs is the pleura, which is a thin, transparent membrane that surrounds the lungs and allows them to expand and contract during breathing.

Inside the lungs, the tissue is divided into small air sacs called alveoli. The alveoli are lined with a specialized type of tissue called the alveolar epithelium, which is made up of cells with thin, flattened shapes that allow for efficient gas exchange. The alveoli are also surrounded by a network of capillaries, which are small blood vessels that carry oxygen and carbon dioxide between the lungs and the rest of the body.

In addition to the alveoli and capillaries, the lungs also contain a network of tubes called bronchi and bronchioles, which help to distribute air throughout the lungs. The walls of these tubes are made up of smooth muscle tissue, which allows them to expand and contract to regulate the flow of air.

Overall, the tissue types in the respiratory system are well-suited to their functions, providing the structural support and specialized features necessary for efficient gas exchange. This allows the respiratory system to perform its vital role in bringing oxygen into the body and removing carbon dioxide.

Explanation:

Answer:

i think its e

Explanation:

Answer:

d

Explanation:

The Gibbs free energy available to do work for the reaction is approximately -15,427.20 kJ, rounded to two decimal places.

To calculate the Gibbs free energy (ΔG) available to do work for the given reaction, we need to use the formula:

ΔG = -nFΔE

where ΔE is the potential difference, n is the number of electrons transferred, and F is the Faraday constant (96.5 kJ/(mol e- × V)).

First, let's calculate the ΔE for the reaction by subtracting the reduction potential of the anode (NH4+ to NO2-) from the reduction potential of the cathode (O2 to H2O):

ΔE = E(cathode) - E(anode)

= (+0.82 V) - (+0.34 V)

= +0.48 V

Next, we need to balance the full reaction to determine the number of electrons transferred (n) when 440 moles of NH4+ are oxidized. The balanced equation is as follows:

8NH4+ + 6O2 -> 8H2O + 6NO3- + 16H+

From the balanced equation, we can see that for every 8 moles of NH4+ oxidized, 6 moles of electrons are transferred.

So, the number of electrons transferred (n) when 440 moles of NH4+ are oxidized can be calculated as:

n = (6 mol e- / 8 mol NH4+) × 440 mol NH4+

= 330 mol e-

Therefore, when 440 moles of NH4+ are oxidized, 330 moles of electrons are transferred.

Now, let's substitute the values into the equation:

ΔG = -nFΔE

= -(330 mol e-) × (96.5 kJ/(mol e- × V)) × (+0.48 V)

Calculating this expression, we find:

ΔG ≈ -15,427.20 kJ

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Water temperature for handwashing should be at least 100˚F (38˚C) , option "A" Helps  it removes oils from the hand that can hold bacteria

Lather your hands by patting them together with the soap. Lather the backs of your hands, between your fingers, and under your nails. Scrub your hands for minimum 20 seconds.

Thus, option "A" is correct, Water temperature for handwashing should be at least 100˚F (38˚C).

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Answer:

weather

Explanation:

Answer:

Explanation:

B FUFISSION

c) regenergation thats why we are different our parents

Answer:

Images

Books

News

Shopping

Videos

Maps

Flights

Finance

All filters

1-Water is passively transported into the roots and then into the xylem. 2-The forces of cohesion and adhesion cause the water molecules to form a column in the xylem. 3- Water moves from the xylem into the mesophyll cells, evaporates from their surfaces and leaves the plant by diffusion through the stomata.

Answer:

If there is too much of the enzyme, it eventually denatures, and this affects the reaction rates.

Increasing enzyme concentration can increase the rate of reaction, all other factors being constant.

Increasing enzyme concentration can increase the rate of reaction, all other factors being constant. This is because the more enzymes there are, the more likely they are to collide with substrate molecules and catalyze the reaction.

At low substrate concentrations, an increase in enzyme concentration can increase the reaction rate up to a certain point, beyond which further increases in enzyme concentration have no effect on the reaction rate. This is because all the available substrate molecules are being rapidly converted into products by the available enzymes, and adding more enzymes does not increase the rate of reaction.

Thus, enzyme concentration is an important factor that can affect the rate of reaction.

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The correct answer would be a heterozygous male with straight hair and a heterozygous female with straight hair

Genotypes for a heterozygous trait are: Ss

Both of the parents have Ss genotypes.

Since curly hair is a recessive trait, it needs both of the alleles for the recessive trait to be present in the genotype for it to be expressed.

If we cross multiply these genotypes, the resulting offspring would be:

SS, Ss, Ss, ss

SS- homozygous straight hair

Ss- heterozygous straight hair

ss- curly hair

Answer:

a heterozygous male with straight hair and a heterozygous female with straight hair

Explanation:

hope  this helps<3

Answer and Explanation:

1. Each of the elements shown are transmitted to the fetus during pregnancy through the mother's bloodstream and through the umbilical cord, where the fetus receives all the support for its body, such as oxygen, nutrients, hormones, treatments, tests, among others. others. Some of them are possible through the visualization of the fetus and the manipulation of the products written by him.

2. Syphilis is a sexually transmitted infection caused by the bacteria Treponema pallidum. This infection has three phases (primary, secondary and tertiary) that are interspersed with asymptomatic periods, which aggravates the severity of the disease, since it presents itself as a silent evil. The primary phase occurs between 3-4 days after infection and its main symptom is the presence of wounds throughout the body, especially in the genitals. If not treated properly, 8 weeks later the secondary phase appears, where the infected person has red spots on the body, itching, fever, muscle pain and swollen and painful lymph nodes in the neck and armpit. When left untreated, the disease progresses to the tertiary stage where it presents severe symptoms that are difficult to diagnose. The disease affects the brain, eyes, heart, joints and the nervous system, causing severe headaches and even epilepsy.

3. It is necessary for both partners to be treated in case of any sexually transmitted infections. This must be done, primarily because the transmission occurred between these partners, which indicates that both have the disease and can reinfect themselves, or infect other people.

4. People aged 15 to 24 are at the greatest risk of being infected with a sexually transmitted infection. This is because people at this age are more likely to not get a steady partner and to adopt behaviors that facilitate infection such as having sexual contact without adequate protection.

5. What causes cervical cancer is the untreated infection of a virus called HPV. This type of cancer is usually asymptomatic, but in the early stages it may show bleeding from the genitals after sexual intercourse.

Answer: ocean, atmosphere, and living organisms

Explanation:

Most of Earth's carbon is stored in rocks and sediments. The rest is located in the ocean, atmosphere, and in living organisms. These are the reservoirs through which carbon cycles.

Answer:

the axial skeleton supports the head, neck, back, and chest and thus forms the vertical axis of the body. It consists of the skull, vertebral column (including the sacrum and coccyx), and the thoracic cage, formed by the ribs and sternum. The appendicular skeleton is made up of all bones of the upper and lower limbs.

Explanation: i  really hope that helps sorry if it did not.

Answer:

The fiberglass is the most affective at keeping the ice cream from melting.

Explanation:

The bolder dots are the fiber glass, and the line is not going up (melting), so it's the least melted.

Answer: Capillary action occurs because water is sticky, thanks to the forces of cohesion (water molecules like to stay close together) and adhesion (water molecules are attracted and stick to other substances).

It reminds me of naruto

Answer:

C₃₆H₆₂O₃₁

Explanation:

Hello,

In this case, since glucose has a molecular formula of C₆H₁₂O₆ and two hydrogen atoms and one oxygen atom are lost per additional glucose, two glucoses would be C₁₂H₂₂O₁₁, three glucoses would be C₁₈H₃₂O₁₆, four glucoses would be C₂₄H₄₂O₂₁, five would be C₃₀H₅₂O₂₆ and therefore six glucose molecules would have molecular formula of C₃₆H₆₂O₃₁.

Best regards.

Answer:

Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity.

Explanation:

The studies shown in the question above started from the same concept to establish the scientific experiment and had the same objective related to the investigation as temperature changes in the environment where these organisms live influences the enzymatic activity and, therefore, the functioning of their organism, being able to including modifying the environment around them. In summary, we can say that the studies sought to support the concept that species operate within a narrow range of optimal temperature and are coupled with enzymatic activity.

Answer:

organism. without it life you wouldnt have a sustainable ecosystem. you need to make sure theres enough of everything.

ex- you need to make sure theres enough deers in the woods and things like that bc other animals will eat it. you get what im saying.

Explanation:

Introducing the Organ System Campaign - advocating for the health and well-being of your body's organ systems!

Our goal is simple - to raise awareness about the importance of taking care of all your body's organ systems. Each organ system plays a vital role in keeping your body functioning properly, and neglecting any one of them can have serious consequences for your overall health.

From the circulatory system, which pumps blood and oxygen to your organs and tissues, to the respiratory system, which brings in oxygen and expels carbon dioxide, to the digestive system, which breaks down food and absorbs nutrients, every system is crucial.

Our campaign will focus on educating people about healthy habits, such as eating a balanced diet, staying hydrated, getting enough exercise, and getting regular check-ups with your doctor. We want to empower individuals to take control of their health and make choices that benefit their body's organ systems.

Join us in the fight for healthy organ systems - because a healthy body is a happy body!

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1.Ice melting is a physical change

2.Eggs cooking is a chemical change

3.Salt dissolving is a physical change

4.Wood burning is a chemical change

5. Fireworks exploding is a chemical change

A substance can change physically even when no new substance is created as a result of the change. It simply modifies the substance's outward attributes, such as its shape, size, texture, or phase (such as solid, liquid, or gas).

When a compound undergoes a chemical change, a new substance or substances with new chemical properties are created. Chemical bonds are broken and formed as a result of this process, which transforms one or more chemicals into one or more new substances. Chemical changes can release or absorb energy (heat, light, or sound), and they are frequently irreversible.

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The majority of organelles are found in both plant and animal cells. Cells do not have a cell wall, a big central vacuole, or plastids like chloroplasts. Plant cells, on the other hand, do.

A photosynthetic unit is a leaf. They are the plants' organs best suited and most adapted to photosynthesis for the following reasons: Chloroplasts, or cells containing chlorophyll, are found in leaves. Stomata found there aid in the gas exchange.

First, in a process known as light-dependent processes, autotrophs absorb energy from the sun. The acquired solar energy is then transformed into potential energy in the second stage, known as light-independent and dark reactions, which is present in autotrophs in chemical bonds within macromolecules.

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Lighter colored mice were more likely to avoid predators and to reproduce. Therefore, option (D) is correct.

The lighter brown coloration of the deer mice in the Sand Hills of Nebraska is likely an adaptation that provides them with a survival advantage in their specific habitat. The light, sandy soil in the area may offer better camouflage for lighter colored mice, making them less visible to predators and increasing their chances of survival.

As a result, these mice would have a higher likelihood of successfully reproducing and passing on their lighter coloration traits to future generations.

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No, "Crick and Watson" is not a type of genetic test. Crick and Watson refer to James D. Watson and Francis Crick, who were scientists involved in the discovery of the structure of DNA. They proposed the double-helix structure of DNA in 1953, which provided the foundation for understanding genetic information and its role in heredity.

Genetic tests, on the other hand, are laboratory tests that analyze an individual's DNA or genes to provide information about their genetic makeup, potential genetic disorders, or predispositions to certain conditions.

These tests can be used for various purposes, such as diagnosing genetic disorders, predicting the risk of developing certain diseases, determining carrier status for genetic conditions, or providing ancestry and genealogical information.

While Crick and Watson made significant contributions to the field of genetics, they are not directly associated with genetic testing. Genetic tests are based on scientific advancements and technologies developed after their groundbreaking discovery of the DNA structure.

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