Question 8 of 10
Which statement is true about the temperature and density of air?

It is true that the nucleus of an atom is made up of protons and neutrons. In the case of nitrogen, the nucleus contains 7 protons and 7 neutrons, giving it an atomic mass of 14.

This is the standard atomic configuration for nitrogen, which has an atomic number of 7 and is located in the seventh group of the periodic table.

Nucleus of nitrogen is the central part of a nitrogen atom which has its protons and neutrons. Nitrogen is a chemical element with the symbol as N and atomic number as 7, which implies a neutral nitrogen atom has seven protons in the nucleus.

The nucleus of a nitrogen atom contains 7 neutrons and 7 protons, giving it an atomic number of 7 and a mass number of 14.

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When calculating forces and torques in a physical system such as the human body, it is possible to deduce the best way to lift an object without injuring yourself.

There are several factors that are important to consider when lifting objects, including the weight of the object, the position of the object, and the angle of the lift. By calculating the forces and torques involved in lifting an object, it is possible to determine the optimal technique for lifting the object without injuring yourself.  For example, lifting a heavy object with the back muscles alone can cause strain and injury. However, by using the legs to provide the majority of the lifting force, the back can remain relatively straight and avoid injury. Additionally, lifting an object from a lower position, such as from the ground, can require more force and torque than lifting an object from a higher position. Thus, it is important to consider the position of the object before attempting to lift it.  Overall, by carefully analyzing the forces and torques involved in lifting objects, it is possible to determine the optimal technique for lifting an object without injuring yourself. This can help prevent injury and ensure that the task is completed safely and efficiently.

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Plants may become extinct even before they are discovered or named, the given statement is true because plants play an essential role in the environment, they provide food and oxygen for all living organisms.

They are a vital source of medicine, wood, paper, and other necessary products. Many undiscovered plant species can be lost before being identified and named. Many plants are under threat of extinction due to habitat loss, overexploitation, climate change, and other factors. Plants that are unique to a specific area and are only found there are the most vulnerable. Deforestation is one of the most significant contributors to habitat destruction and species extinction.

Forests are cleared to make room for agriculture, urbanization, and industrial development. Deforestation also increases the risk of soil erosion, landslides, and other natural disasters. Plants are essential to our survival and the survival of all living organisms, it is essential to raise awareness of the threats facing plants and take steps to protect them from extinction. It is critical to conduct further research and protect habitats to avoid losing any undiscovered plant species. So therefore the given statement is true because plants play an essential role in the environment, they provide food and oxygen for all living organisms.

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Answer:

sentence 3

Explanation:

edge 2020

In sentence 3 'The Underground Railroad were a network of hiding places' a subject-verb agreement error is observed.

In a sentence when the subject of the sentence does not accept in number with the verb, the sentence misses subject-verb agreement.

In the given sentence 'The Underground Railroad were a network of hiding places'  the verb “were” is not matching the subject, it is a subject-verb agreement error.

There would be, 'was' is used as a verb in sentence three, correctly sets the subject-verb agreement. The subject of this sentence is the singular “one,” not the plural “Railroads.” This suggests the verb should also be singular.

Therefore, sentence three correctly depicts the subject-verb agreement error.

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Answer:

Pretty sure it's C : The Nile River Valley.

Explanation:

At Oval C, there's a river shown in the shape of the Nile River so I'm 99% sure it's the Nile River Valley.

Answer:

b i just took this and this is the answers they give u please mark brainly

Explanation:

Answer:

yep

Explanation:

they have a double hydrogen bond

One of the organic substances not normally excreted by the kidney is known as glucose. Thus, the correct option for this question is B.

The organic substances that may be excreted by the kidneys may significantly include creatinine, urea, sodium, water, and potassium. As the kidney plays an important role in the excretion of waste products and toxins such as urea, creatinine, and uric acid, and regulation of water absorption.

According to the context of this question, the most common waste products that are functionally excreted by the kidneys are urea and creatinine.

The kidneys act as very efficient filters for ridding the body of waste and toxic substances, and returning vitamins, amino acids, glucose, hormones, and other vital substances into the bloodstream.

Therefore, one of the organic substances not normally excreted by the kidney is known as glucose. Thus, the correct option for this question is B.

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In the cross of two heterozygous individuals for a codominant trait, the expected phenotypes in the f1 will be 1:2:1 (1 black color: 2 blank and white : 1 white).

The punnet square for a codominant trait will show all three possible combinations when crossing two heterozygous phenotypes since it leads to:

                H                                                   h

H       HH (black)                               Hh  (black and white)

h       Hh (black and white)               hh (white)

Therefore, with this data, we can see that the punnet square for a codominant trait.

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Answer:

Molecules move around faster and faster as water gets hotter and hotter. Water expands or increases in volume when it get heated.

Explanation:

Answer:

carbon for building organic molecules

The atmosphere, which is the layer of gases surrounding the Earth, is most responsible for sudden weather changes such as heavy rain. It plays a crucial role in regulating and distributing weather patterns, including the formation of precipitation.

The atmosphere is the layer of gases surrounding the Earth, and it plays a crucial role in weather patterns and changes. It consists of various components, including water vapor, clouds, and air currents.

When Tasha reached a particular elevation in the mountain range and it started raining heavily, it indicates a significant change in weather conditions.

As Tasha ascended to higher elevations, she entered different layers of the atmosphere, which can have varying temperatures, humidity levels, and air pressure. These factors contribute to the formation of clouds and precipitation.

When the air rises along the mountain slopes, it cools down, causing the water vapor present in the air to condense and form clouds. Eventually, these clouds release rain or other forms of precipitation, resulting in the sudden heavy rainfall that Tasha experienced.

Therefore, the atmosphere, with its composition and dynamics, is primarily responsible for the sudden weather change Tasha encountered during her trekking expedition in the mountain range.

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The equilibrium potential is 0.097 V and the sign of the equilibrium potential is positive.

There is a fundamental concept of the equilibrium potential (\(E_i_o_n\)) of an ion which states that it is the voltage that acts across the membrane that exactly counteracts the tendency of the ion to diffuse down its concentration gradient. The formula to calculate the equilibrium potential of an ion is given by:

Nernst Equation: \(E_i_o_n\) = (RT/zF) x ln (Co/Ci)

Where;

R = Gas constant

T = Temperature (in kelvin)z = valence of the ion

F = Faraday's constant

Ci = concentration of the ion inside the cell

Co = concentration of the ion outside the cell

Calculate the equilibrium potential of the anion. Equilibrium potential of an anion can be calculated by using the Nernst equation:

\(E_i_o_n\) = (RT/zF) x ln (Co/Ci)

Here, as we know the concentration of the anion in both intracellular and extracellular fluid, we can calculate its\(E_i_o_n\) . The anion has a negative charge, which means the valence of the ion (z) will be negative. The formula becomes:

\(E_a_n_i_o_n\) = (RT/zF) x ln (Co/Ci)

Put the given values:

Co = 18 mM (given)Ci = 78 mM

(given)z = -1R = 8.314 J K-1 mol-1

F = 96485 C mol-1

T = 293 K (20°C) [room temperature]

\(E_a_n_i_o_n\)= (8.314 x 293)/(-1 x 96485) x ln(18/78)

\(E_a_n_i_o_n\) = -0.066 x ln(0.23)

\(E_a_n_i_o_n\)= -0.066 x -1.469

\(E_a_n_i_o_n\) = 0.097 V (or 97 mV)

Therefore, the sign of the equilibrium potential is positive.

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In the image, we can see antibodies with antigens attached.

The antibodies help us to fight pathogens by binding and recognizing pathogens (C and D), the binding can tag the pathogen to let know other cells of the immune system or it can directly deactivate the pathogen.

Ostriches and giraffes are both native to the savannahs of Africa. They share the same characteristic of a very long neck, is an example of convergent evolution.

Convergent evolution is the process by which unrelated or distantly related organisms evolve similar body structures, adaptations, or characteristics in response to similar ecological conditions, selective pressures, or challenges. It happens when organisms in separate environments face the same selective pressures and evolve similar body structures or functions to increase their chances of survival and reproduction.

Convergent evolution typically results in analogous structures in different species that serve the same or similar functions, such as wings in birds and insects or fins in dolphins and fish. In this case, ostriches and giraffes have a similar neck structure, which they both developed separately to aid in the survival in the African savannahs. Ostriches have long necks that help them reach the ground to eat, while giraffes have long necks that help them reach tall trees for food.

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Applied heat works between and at critical temperatures. It works by raising the temperature of the substance to a critical point, which causes a phase transition. If heat is applied after the critical point, the substance changes from liquid to gas. The same is true for cooling. If a substance is cooled below its critical temperature, it can change from gas to liquid.

When a substance is heated, its molecules move faster. At the critical point, the molecules have enough energy to break the bonds that hold them together. As a result, the substance undergoes a phase transition from liquid to gas. The same is true for cooling.

When a substance is cooled, its molecules move slower. If it is cooled below its critical temperature, it will undergo a phase transition from gas to liquid.

A refrigerator works to cool down warm objects by using a refrigerant, which is a substance that can absorb heat at a low temperature and release it at a higher temperature. The refrigerant is circulated through a closed loop system, which includes a compressor, a condenser, an expansion valve, and an evaporator. The compressor compresses the refrigerant, which raises its temperature. The refrigerant then flows through the condenser, where it releases heat to the environment. As a result, the refrigerant cools down and changes from a gas to a liquid.

The liquid refrigerant then flows through the expansion valve, where it expands and cools down further. Finally, the refrigerant flows through the evaporator, where it absorbs heat from the warm object, causing it to cool down. The refrigerant then flows back to the compressor to start the cycle again.

Name of process State of matter being changed/points at which the process occurs Evaporation Liquid to gas Melting Solid to liquid Sublimation Solid to gas Condensation Gas to liquid freezing  Liquid to solid

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If you were looking at a frog's lifecycle, you would find more specialized cells in the adult frog stage (option b).

In a frog's lifecycle, the adult frog stage is where you would find more specialized cells. This stage occurs after the frog has gone through various developmental stages, starting from the beginning ball of cells.

1. The beginning ball of cells: This is the initial stage of a frog's development. It starts with the fertilization of the egg and the formation of a zygote. At this stage, the cells are not yet specialized and are in the process of dividing and multiplying.

2. Developing tadpole: After the beginning ball of cells, the zygote undergoes further development and transforms into a tadpole. The tadpole stage is characterized by the presence of gills and a tail. The cells in this stage are becoming more specialized but are still relatively unspecialized compared to the adult frog stage.

3. Adult frog: The adult frog stage is the final stage of the lifecycle. At this point, the tadpole has undergone metamorphosis and has transformed into a fully developed frog. In this stage, the cells have become highly specialized to perform specific functions necessary for the frog's survival, such as muscle cells, nerve cells, and specialized organs like the heart and lungs.

4. The same amount at all stages: It is not accurate to say that there is the same amount of specialized cells at all stages of the frog's lifecycle. As the frog develops and goes through metamorphosis, the cells differentiate and specialize to fulfill specific roles and functions required for each stage of development. The highest concentration of specialized cells is found in the adult frog stage.

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Answer:

The scale is same at both planets.

Explanation:

The scale of nuclear fusion reaction on earth  is the same as compared to fusion reactions that is happening in the sun because both reactions produces the same product i. e. energy and heat etc and both are occurring naturally. Due to large size of the sun, huge number of nuclear fusion reactions occur ac compared to the earth which is smaller in size so the scale of both nuclear fusion reactions are the same but vary in numbers.

Answer:

When you inhale (breathe in), air enters your lungs, and oxygen from that air moves to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out)

Explanation:

Answer:

carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out).

Explanation:

I literally just had this one in school

The concentration of carbon is increased in the oceans have made them more acidic.

Increased carbon concentration in the oceans which have made the ocean water more acidic is the indication that more carbon is absorbed by the ocean. When carbon absorbed by the ocean, the carbon reacts with water which produced carbonic acid.

This carbonic acid decrease the pH of the ocean water that adversely affect the marine organisms especially coral reefs. When the pH of the ocean water increases, bleaching of coral reef occurs because the algae living on them die so we can conclude that the concentration of carbon is increased in the oceans have made them more acidic.

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Answer:

A

Explanation:

Increased carbon in the oceans has made them more acidic.

True. Populations native to the high-altitude Andean Altiplano in South America have an increased red blood cell levels due to their unique genetic adaptation.

Sensors in a variety of cells detect hypoxia and initiate cells specific homeostatic response in the body.

They initiate immediate (ventilatory) and delayed (hematological) responses. These are part of evolutionary adaptation to the high altitude visitors and the past colonizer of 2 plateaus.

It appears that the Tibetan highlanders have retained immediate ventilatory response but not the delayed hematological response.

In contrast, the Andean highlanders have retained hematological response. That is the reason why the Andean highlanders have high levels of red blood cells.

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Answer:

c - half as much

Explanation:

i took this last year

Answer:one-half as much

Explanation:

Answer:

The correct answer is the collection area

hope this helps! <3

When sea otters hunted nearly to extinction in California coastal communities, sea urchin populations increased, kelp beds decreased in size : this reflects that otters must have ordinarily eaten sea urchins.

Symbiosis is type of a close and long-term biological interaction between two different biological organisms. It can be parasitic, mutualistic, and commensalistic.

Parasitism is where one species benefits and the other is harmed and commensalism is when one organism benefits and the other is left unharmed. Mutualism is when both the organisms benefit from that interaction.

When two animals have a symbiotic relationship, it clearly means that they rely on each other for survival. In nature, this codependence can be beneficial.

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Answer:

D

Explanation:

i hope this helps :)

Answer:

telophase

Explanation:

I don't know why I just know this for some reason.

The bones in a bird are hollow, reducing its weight for flight, this is an example of ADAPTATION. The adaptive responses emerge as a consequence of different environmental pressures.

Adaptation is an evolutionary process by which organisms adjust to the environment in which they live.

For example, the bones in a bird are hollow because this adaptive feature enables them to fly.

Adaptations are a consequence of the process of natural selection, i.e., the differential survival and reproduction of the fittest organisms.

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Because of the short days, extreme cold, and an abundance of snow in winter, trees are unable to complete all of their growth during this time. Growth is impossible during the winter since there is little to no water and little to no sunlight.

The Pecia ovobata's conical form encourages snow to shed and reduces branch damage. The needles' narrowness reduces the surface area through which water could escape. They also have a thick, waterproof waxy coating. The needles are shielded from drying winds as a result.

Spruce commonly withers in hot, humid conditions despite being a native of cool, dry regions. Pick a planting location with full sun exposure, rich, wet soil, and good drainage. Once planted, spruce is tolerant of brief droughts. The short version is that evergreens don't have to be green all the time, but it's perfectly normal for them to lose leaves in the winter and early spring. Check that newly planted trees and shrubs have received the recommended upkeep if they appear ill after spring or in the middle of summer.

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Answer:

Explanation:

Aquifers are groundwater reservoirs often tapped by wells. Water:  Water is pretty darn important for living things.