Which of the following is always an important part of an experiment?

1.making a working model

2.observing things in nature

3.making drawings of things observed

4.identifying and controlling variables

Answer:

The respiratory system is directly connected to the external environment. More specifically, the gaseous environment around me can automatically find its way into the internal environment inside me.

The human respiratory system takes in air from the external environment. The purer the air is, the purer the content of its intake.  

The system which keeps the lungs clean is found in the trachea which is lined with cells containing hair-like protrusions called cilia and also produces mucus and water droplets. The mucus and the cilia's activities combine to keep air passages hydrated and work together to trap dust, bacteria, and other foreign substances. An example of a foreign substance is heavy smoke from a building on fire. Other examples are cigarette smoke, heavy atmospheric dust such as is found in deserts. When these substances are inhaled, they can temporarily impede the efficiency of the cilia.

So it is important for one to avoid environments whose air is contaminated.

Because a contaminated environment translates to an impeded functioning of the respiratory system and a reduction in the quality of oxygen that reaches the bloodstream.

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Answer:

no.

Explanation:

Answer:

When the moon is full, it is on the opposite side of the Earth from the sun.

Explanation:

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Answer:

We go to hell or heaven depending

If u go to hell u will have the most un mercy punishment and if u go to heaven u get to live ur best life

Cyathea spinulosa is considered more advanced than Polytrichum strictum but less advanced than higher plants due to its vascular tissue, embryonic development, and spore production.

Cyathea spinulosa and Polytrichum strictum both belong to the plant kingdom, but Cyathea spinulosa is considered more advanced due to its possession of vascular tissue.

Vascular tissue is specialized tissue that conducts water, minerals, and nutrients throughout the plant.

This allows for greater efficiency in resource distribution and allows Cyathea spinulosa to grow taller than Polytrichum strictum.

Additionally, Cyathea spinulosa exhibits embryonic development, meaning that it undergoes a multi-stage process of growth and differentiation from a fertilized egg.

This is a more advanced reproductive mechanism than the simple spore production of Polytrichum strictum. However, Cyathea spinulosa is still less advanced than higher plants, which possess further specialized structures and mechanisms such as flowers, seeds, and fruits that aid in reproduction and dispersal.

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The ribosome-binding site of prokaryotes is also known as the Shine-Dalgarno sequence. This sequence is found in the 5' untranslated region (UTR) of mRNA and is complementary to a sequence on the 16S ribosomal RNA (rRNA) in the small ribosomal subunit.

The interaction between the Shine-Dalgarno sequence and the 16S rRNA allows the ribosome to bind to the mRNA and initiate translation.
The Pribnow box, TATA box, and promoter are all related to transcription in prokaryotes and eukaryotes. The Pribnow box is a conserved sequence found in the promoter region of bacterial DNA that is recognized by RNA polymerase and is important for transcription initiation. The TATA box is a sequence found in eukaryotic promoters that is also important for transcription initiation. The promoter is a region of DNA that controls the initiation of transcription by RNA polymerase.
In summary, while the Shine-Dalgarno sequence is related to translation initiation in prokaryotes, the Pribnow box, TATA box, and promoter are related to transcription initiation in both prokaryotes and eukaryotes.

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Answer:

B.: It stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids.

Explanation:

It stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids.

RNA is ribonucleic acid. It is a nucleic acid composed of the ribose sugar.

mRNA helps in transforming the information in the process of protein formation.

There are four types of RNA are there, and all RNA helps in protein synthesis.

Thus, It stores in the nucleus the information a cell needs to make its proteins with the right orders of amino acids.

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Answer:

\(\Huge \boxed{\textbf{B. True}}}\)

Explanation:

Hydrogen bonding plays an important role inside many molecules. It occurs due to an electrostatic attraction between a hydrogen atom bonded to an electronegative element like oxygen or nitrogen, and another nearby electronegative atom that possesses a lone pair of electrons. This second atom acts as an acceptor for the hydrogen.

The hydrogen is pulled slightly toward the acceptor due to their opposing charges. These hydrogen bonds can form both between different molecules as well as within different parts of the same molecule.

They are stronger than the normal attractions between permanently polarised molecules or non-polar atoms. However, hydrogen bonds are not as intensely strong as true covalent bonds, which involve sharing electrons, or ionic bonds that transfer electrons.

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The permanent teeth that replace the primary teeth are called successional teeth. Details about teeth can be found below.

A tooth is the hard, calcareous structure present in the mouth of many vertebrate animals, generally used for eating or chewing.

However, the teeth of mammals especially humans grows in phases. First comes the primary teeth also called milk tooth.

After the milk teeth, then comes the permanent teeth called the successional teeth that succeeds the primary teeth. The successional tooth is any permanent tooth that grows in the place of a milk tooth.

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The term that applies to the leaves of either the elephant ear plant or the taro plant and is a principal ingredient in island soups is "luau."

Luau leaves come from both the elephant ear (scientific name: Colocasia esculenta) and taro (scientific name: Alocasia macrorrhizos) plants.

These leaves are widely used in traditional island cuisine, particularly in the Pacific Islands, for their unique flavor and nutritional value.

They are rich in vitamins A and C, as well as fiber and other essential nutrients. The leaves are typically cooked to remove any potentially harmful compounds and to bring out their full flavor.
In island soups, luau leaves are often combined with various meats, fish, or vegetables, as well as aromatic herbs and spices.

They provide a hearty and delicious base that helps to thicken the soup while adding a distinct taste that is synonymous with island cuisine.

Luau leaves are also used in other dishes such as stews, stir-fries, and even desserts, making them a versatile and important ingredient in many island recipes.

Overall, the use of luau leaves from either the elephant ear or taro plant greatly contributes to the rich culinary heritage of island communities.

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Answer:

letters should not be in math

Explanation:

✋‼

Answer:

B = 59

Explanation:

B+121-121=180-121

simplify the first part of the equation: B=180-121

subtract 121 from 180: B=59

Answer:

Probability can be used to calculate the likelihood that the offspring will be of a certain sex, or that the offspring will inherit a certain trait or disease if all outcomes are equally possible. It can also be used to calculate probabilities of traits in larger populations.

Explanation:

To find a way to lower mosquito populations in the wild and increase cases of malaria in the future the purpose of using CRISPR in the Anopheles gambiae mosquitoes experiment.

The malaria parasite, which is spread by infected mosquitoes, multiplies inside red blood cells after entering the human bloodstream. After a few days, these cells burst, infecting other red blood cells and resulting in symptoms such as a severe headache, nausea, vomiting, fever, and coma.

A plasmodium-genus single-celled parasite, which causes malaria. Most frequently, mosquito bites are the means of parasite transmission to people.

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Answer:

A pengiun is the only bird that can swim and not fly

Explanation:

Edge processing improves Web gadgets and web applications by carrying registering nearer to the wellspring of the information. This limits the requirement for significant distance interchanges between client and server, which lessens dormancy and transmission capacity utilization.

Dormancy essentially gauges the time that slips by in the correspondence between the client starting the correspondence and the time it takes to get the reaction. The significant degree to which we move is a millisecond.

Edge registering is a nearby wellspring of handling and stockpiling for the information and processing needs of IoT gadgets, which decreases the inactivity of correspondence between IoT gadgets and the focal IT networks those gadgets are associated with.

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Answer:

is your crush sammer?

Explanation:

are you in 8th grade

Answer:

It allows them to save energy

Explanation:

Hibernation is a behavioral adaptation that involves physiological changes to survive during wither months. These physiological changes can include a decrease in body temperature, respiratory/heart rate and metabolism. The main purpose for which animals enter hibernation is to conserve energy, thereby surviving adverse climatic conditions and/or periods when food is scarce. Some examples of true hibernators (i.e., animals that enter into a state of minimal activity) include bats, hedgehogs, allies, squirrels, marmots, etc.

Answer:

a) mitochondria

b) centriole

c) nucleus

d) endoplasmic reticulum

e) cell membrane

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Answer:

Atoms! An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across. They are so small that accurately predicting their behavior using classical physics—as if they were tennis balls, for example—is not possible due to quantum effects.

The statement is true. Slowing down the transmission rate of the HIV virus can be seen as an application of Darwinian Medicine.

Darwinian Medicine refers to the concept of applying principles of evolution and natural selection to better understand and address health and disease-related issues.

In the case of HIV, slowing down the transmission rate can have a significant impact on the dynamics of the virus population. By reducing the rate at which the virus spreads from person to person, it can create selective pressure on the virus strains.

This selective pressure can favor the survival and circulation of less virulent or slower replicating strains of the virus. Over time, this can lead to a shift in the prevalence of the virus strains towards those that are less harmful and have a slower progression rate.

By practicing Darwinian Medicine and strategically intervening to slow down HIV transmission, it is possible to influence the evolution of the virus and potentially reduce the prevalence of fast-killing strains.

This approach aligns with the principles of natural selection and can contribute to the long-term management and control of HIV/AIDS.

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Answer:

I think its the third one should be

Answer:

The graph above shows that the position of the body is changing with time exponentially and it is accelerating. The velocity of the body is changing with time and as a result the distance it is covering per time will be changing. Generally the graph of positions against time for a body that is accelerating will always look like the diagram above. For constant velocity motion, the graph will be a straight line with slope equal to the velocity of the body.

Explanation:

The velocity - time graph will for a undergoing the motion described by this graphics will be a straight line graph with it slope equal to the acceleration of the body.

Split-brain patients have undergone a surgery that severs the corpus callosum, the band of fibers that connects the two hemispheres of the brain. This means that information received through the right senses (ear, eye, or side of the body) is processed by the left hemisphere and vice versa. The correct answer is c)Speak about info received exclusively in their left hemisphere.

Split-brain patients are unable to speak about information received exclusively through their left hemisphere because that information cannot be transferred to the language centers in the left hemisphere for verbal expression. However, they can perform tasks that involve integrating logical and spatial information because both hemispheres are still able to process information independently. They may also have difficulty coordinating movements between major and minor muscle groups, but this is not a specific symptom of split-brain syndrome.

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This is a carrot whose is in orange colour, wear green hat and sound like a parrot.

Vegetables are defined as those parts of plants that are consumed as food by humans or other animals where the original meaning is still commonly used and includes all edible plant parts including flowers, fruits, stems, leaves, roots, seeds in the case applied to plants collectively.

There are several types of vegetables which are as follows:

The carrot is the type of root vegetable which is typically orange in color, though purple, black, red, white, and yellow cultivars exist.

Thus, this is a carrot whose is in orange colour, wear green hat and sound like a parrot.

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Answer:

I think its A and E

Explanation:

^^^^^^

The challenges to implementing sustainable farming practices: higher initial costs;  increase labor costs.

It is an integrated system which includes both plant and animal farming practices, which hence has a minimum effect on the environment. It involves using substances of natural origin and hence meets the needs without causing an adverse impact on the environment.

Hence the correct options are (c) and (e) higher initial costs;  increase labor costs.

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Answer:

white tuft of dandelion seeds

They cannot move around freely

I hope this helps

Answer:

Absence seizures

Explanation:

This is a  type of seizure also known as ( Petit Mal seizures).It   is common in children, (between 4-14 years) and  characterised with intent stare at empty space for few seconds(which may occur in 10 -100 times in a day) and  does not caused any significant harm.However,with frequent occurrence it may  affect concentration.It does not exceed  15 seconds

it is caused by repeated electrical signals in the brain due to interference  in the synaptic transmission and also  to alterations in levels of Neurotransmitters .

Staring into empty space,

Fluttering of eyelids

Intermittent stoppage of speech  are some of the symptoms.

Treatment is with medications.,

The spreading out of molecules in the air from a center of concentration is caused by diffusion. Diffusion is the movement of molecules from a region of high concentration to a region of low concentration.

This process occurs due to the random motion of particles, and it is driven by the natural tendency of particles to move from an area of high concentration to an area of low concentration.

Diffusion plays a vital role in many natural processes, including gas exchange in the lungs, transport of nutrients and waste products across cell membranes, and the release of odor molecules into the air.

In each of these processes, the molecules move from a region of high concentration to a region of low concentration due to the natural tendency of particles to spread out and become evenly distributed over time.

The rate of diffusion is influenced by several factors, including the concentration gradient, the temperature of the environment, and the size and shape of the molecules involved.

Diffusion can be a slow process, particularly over long distances or in areas where the concentration gradient is small, but it is a fundamental mechanism that underlies many of the processes that allow living organisms to function and survive.

Overall, the spreading out of molecules in the air from a center of concentration is an essential process that is driven by the natural tendency of particles to diffuse and become evenly distributed over time.

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