Identify the element that humans need to breathe.

The following are components of the nonspecific immune response are mucous.

Innate, or nonspecific, immunity is the protection device with that you have been born. It protects you towards all antigens. Innate immunity entails limitations that maintain dangerous substances from coming into your body.

At mucosal surfaces, most effective the mucus layer stands among invading virus and stay cells. The mucus layer paperwork a bodily barrier that entraps overseas debris and consists of them out of the body; it additionally incorporates nonspecific inhibitors.

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The solution regarding the Mechanical waves and electromagnetic is discussed below:

Answer:

b leech

Explanation:

Answer:

The answer is B

Explanation:

It is B because leeches suck our blood so when a blood clot appears ( a gelatinous mass of fibrin and blood cells formed by the coagulation of blood ) They can fix it by sucking our blood.

Answer:

A characteristic feature of ferns is their root structure. Ferns spread by rhizomes, which are stems that may run just above or just below the ground. The rhizomes produce fronds above them and roots below them. Some ferns have spreading habits while others have clumping forms, but both types produce roots from their rhizomes.

Explanation:

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Answer:

the system of nomenclature in which two terms are used to denote a species of living organism, the first one indicating the genus and the second the specific epithet.

Explanation:

Final answer:

Binomial nomenclature is a system of naming species with a two-part Latin name consisting of the genus name and species identifier. Developed by Carolus Linnaeus, it provides a unique and universally recognized name for each species, avoiding the confusion of common names and facilitating clear communication among scientists worldwide.

Explanation:

Binomial nomenclature is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. This two-part name is called a binomial (meaning "two names" in Latin). The first part of the name identifies the genus to which the organism belongs, while the second part identifies the species within the genus. For example, the scientific name for humans is Homo sapiens, where Homo is the genus and sapiens is the species identifier.

The Swedish naturalist Carolus Linnaeus is credited with developing binomial nomenclature in the 18th century, which revolutionized the way scientists named and classified organisms. It enabled clearer and more consistent communication among scientists from different regions and languages. When printed, the genus name is always capitalized and the species name is always lowercase, and both are italicized, for example, Felis catus for the domestic cat.

The convention of binomial nomenclature not only mitigates the confusion caused by local and common names but also provides each species with a unique and universally recognized name. This universal nomenclature facilitates accurate communication and information sharing among biologists and researchers across the globe.

Answer:

Melting and boiling points.

Explanation:

That s is because the bonding in ionic compounds is much stronger than covalent compounds.

Molecular compounds have lower melting and boiling points than ionic compounds because the intermolecular forces within molecular compounds are weaker than the ionic bonds in ionic compounds, requiring less energy to disrupt.

Compared with ionic compounds, molecular compounds have lower melting and boiling points. This is because molecular compounds, also known as covalent compounds, are composed of molecules held together by various types of intermolecular attractions, such as hydrogen bonding, dipole-dipole interactions, and London dispersion forces. These forces are significantly weaker than the ionic bonds found in ionic compounds, which are typically formed between metals and nonmetals and create a rigid crystalline structure. Hence, less energy is required to disrupt the intermolecular forces in molecular compounds, resulting in their generally lower melting and boiling points. For example, water, a molecular compound, melts at 0 °C and boils at 100 °C, whereas sodium chloride, an ionic compound, melts at 801 °C and boils at 1413 °C. These characteristics also lead to molecular compounds being poorer electrical conductors and having varied water solubility based on the type of intermolecular forces involved.

Answer:

fungus

Explanation:

Among the options provided, a fungus is the decomposer.

In nature, decomposers play a critical role in recycling nutrients. They break down the remains of dead organisms and organic waste. Among the given options:

Therefore, the correct answer is fungus.

One condition that must be met for a population to be in genetic equilibrium is the absence of mutations. Other conditions include no migration, a very large population, random mating, and no natural selection as stated by the Hardy-Weinberg theorem.

For a population to be in genetic equilibrium, certain conditions must be met. One of these conditions is no mutation, meaning there should be no change in the DNA sequence. Alongside this, other essential conditions include no migration (no individuals entering or leaving the population), a very large population size to minimize the impact of genetic drift, random mating among individuals without any selective pressures, and no natural selection, where all genotypes have equal probabilities of survival and reproduction.

The Hardy-Weinberg theorem suggests that maintaining these conditions will result in allele and genotype frequencies that do not change over time, indicating no evolutionary forces at play. However, it is recognized that these conditions are rarely, if ever, fully met in natural populations due to the influence of evolutionary processes such as drift, mutation, migration, and selection.

Answer:

It originated in the nucleus’s

Explanation:

Due to the DNA origin.

Answer:a). base pairing rules

Explanation: A DNA is a double stranded helix in which the two DNA strands are antiparallel and complementary to each other. Watson and Crick developed the base pairing rules that adenine pairs with thymine and cytosine pairs with guanine. The complementary strand are not the same in base sequence and composition instead anywhere adenine is found in one strand, thymine is found in the other strand and anywhere cytosine is found in one strand, guanine occurs in the other strand.

Answer:

The correct option is D) Thunder is astonishing and makes the land more wondrous.

Explanation:

These lines from the "Twelfth Song of Thunder" shows that the Navajo people consider the voice of thunder as a blessing. They think that the way a thunder looks in the dark clouds and the voice that it makes is indeed astonishing and wondrous.

Answer:

D is the answer

Explanation:

your welcome [

Answer:

Because salt dehydrates the fish and also freezes it and keeps it from thawing and rotting.

Explanation:

https://van.physics.illinois.edu/qa/listing.php?id=20576&t=freezing-fish-with-salt

Answer:

The possible errors that could cause the disorder of hemophilia in the human body are given below :

Genetically : The main reason for the occurance of hemophilia in the human body through genetically. Genetically means that hemophilia inherent from parents to the child. It is a disease in which body unable to clot the injured part of the body. The cells which are responsible for blood cloting is platelets.

Explanation:

Answer/ Explanation:

Punnett squares attached.

1. A.The punnett square shows the cross between two Ff heterozygous plants. The resulting plants are 25% FF, 50% Ff and 25% ff. This means that there are 25% red, 50% pink, 25% white.

B. In a population of 200 plants, we would expect 50 red, 100 pink, and 50 white.

2. A. The punnett square shows a cross between two Zz heterozygous mice.

B. If there is a phenotype missing from the offspring, we can assume that for some reason the genotype is lethal. That means that we can't see any with the phenotype because none of them survive past birth. Therefore, the third coat colour could be lethal.

4. Punnett square attached.

Genotype of a heterozygous black coated rabbit is CBc

Genotype of a homozygous white coated rabbit is CWCW

The genotypes and phenotypes of the offspring are CBCW (black and white spotted), CWc  (white), CBCW (black and white spotted), CWc  (white)

5. Punnett square attached.

Lets say that the hemophilia allele is h and the normal allele is H. Mrs Eryth is XHXh, Mr Eryth is XHY. The genotypes and phenotypes of their children are: XHXH (normal non-carrier female), XHXh  (normal but carrier female), XHY (normal male), XhY  (affected male)

Answer:

a. Anaphase 2

b. Metaphase 1

c. Telophase 1

d. Prophase 1

e. Telophase 2

Explanation:

Following is a summary of the events of meiosis:

Interphase:

Prepares the cell for division. Duplication of DNA, duplication of centrioles occurs and the cell grows in size. At this stage the cell is diploid (2n).

Prophase 1:

First stage of Meiosis 1.The centrioles move to the poles of the cell, the nuclear membrane disintegrates, homologous chromosomes pair up (in the form of tetrad), form a chiasmata and then exchange segments of chromosomes with each other. This process is called crossing over.

Metaphase 1:

Involves the arrangement of the crossed over, homologous chromosomes on the metaphase plate which is sort of like a web of spindle fibers that originates from the centrioles.

Anaphase 1:

The tetrads arranged on the metaphase plate are pulled apart by the spindle fibers. This is the result of tension that build up in the spindle fibers as they grow towards opposite poles.

Telophase 1:

The last stage of meiosis 1. Involves the arrival of the chromosomes at the poles, the nuclear membrane starts to form and the chromosomes start decondensing. Telophase 1 yields 2 daughter cells with half the number of chromosomes as that in the parent cell.

Meiosis 2:

Meiosis 2 is exactly similar to mitosis. The only difference is that the haploid cells entering meiosis 2 do not duplicate their DNA. Meiosis 2 just involves the separation of the sister chromatids of homologous chromosomes.

The steps of meiosis shown in the diagrams are: Prophase I, Metaphase I, Anaphase I, Telophase I, Cytokinesis I, Prophase II, Metaphase II, Anaphase II, Telophase II, Cytokinesis II.

The steps of meiosis shown in the diagrams are:

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the reason why asthma could cause this symptom is because the asthmatic bronchiole is much narrower than the normal bronchiole, and it's filled with mucus. If there isnt a sufficient amount of air getting through the lungs for gas exchange, the person will need to have heavier breaths to compensate.

Answer:

The asthmatic bronchiole is much narrower than the normal bronchiole, and it’s filled with mucus. If enough air does not get to the lungs for gas exchange, the person will need to breathe heavily to compensate.

Explanation:

PLATO answer

Answer:

Having more fast-twitch muscle fibers is one factor that contributes to muscle strength. Another factor that determines strength is muscle mass. People with larger muscle cross-sectional areas can generate greater amounts of force. This should come as no surprise.

Explanation:

Final answer:

The malonic acid most likely affected the mitochondria in the muscle cells, leading to a decrease in ATP production. The ATP production fell to near zero but not actually zero because other metabolic pathways like glycolysis can still generate small amounts of ATP in the absence of oxygen. A testable hypothesis could be that malonic acid inhibits the enzymes involved in aerobic respiration, leading to a decrease in ATP production. If malonic acid is added to an anaerobic organism, it is unlikely to have a significant effect on ATP production.

Explanation:

The organelles in the muscle cells most likely affected by the malonic acid are the mitochondria. Mitochondria are responsible for producing adenosine triphosphate (ATP), which is the main energy-carrying molecule in cells. The malonic acid likely disrupted the normal functioning of the mitochondria, leading to a decrease in ATP production.

The ATP production fell to near zero but not actually zero because there may have still been a small amount of ATP being produced through other metabolic pathways in the cells, such as glycolysis. Glycolysis is an anaerobic process that can generate small amounts of ATP even in the absence of oxygen.

A testable hypothesis concerning respiration in cells treated with malonic acid could be that the malonic acid inhibits the enzymes involved in aerobic respiration, leading to a decrease in ATP production. This hypothesis could be tested by comparing the ATP production in cells treated with malonic acid to cells not treated with malonic acid.

If malonic acid is added to an anaerobic organism, it is likely to have little to no effect on ATP production. Anaerobic organisms rely primarily on glycolysis for ATP production, which does not require oxygen or functioning mitochondria. Therefore, the malonic acid would not significantly impact ATP production in an anaerobic organism.

Answer no 8:

The correct option is D) Antelopes with muscular legs are bale to outrun their predators better than antelopes with poor muscle tone. Thus they lived to reproduce.

Explanation:

Genetic variations in a population are the main reason that natural selection tends to occur. Natural selection favours those organisms which have better characteristics.The organisms with better traits are able to reproduce and pass on their characteristics to their offsprings.

Answer No 10:

The correct option is A) Phenotype directly influences the interaction of an organism with its environment.

Explanation:

The interactions between the phenotypic traits and the environment analyze whether a particular organism will be able to survive and pass on its characteristics to its offspring. Hence, the phenotype directly influences the interaction of an organism with its environment.

Answer No 9

The correct option is A) resistance to a virus

Explanation:

Mutations can be described as any changes which occur in the DNA of an organism. Mutations might be beneficial or harmful depending on the location where the mutation arises. Viruses are usually harmful for eukaryotes. Hence, the correct option is A.

Answer No 11:

The correct option is C) Giraffes with longer necks survived because they were better suited to the environment.

Explanation:

Natural selection tends to favour those organsims which are better suited to live in an environment. Those organisms with better characteristics are able to survive and pass on their traits to their offsprings.

The giraffes with longer necks were better adapted to live in the environment and hence were favoured by natural selection.

Answer No  12:

The correct option is D) selective breeding

Explanation:

Selective breeding can be described as a technique in which organisms with better characteristics are crossed, so that offsprings with better characteristics can be produced. Selective breeding is done by humans where as natural selection is done by the nature.

Answer:

slow changes allow time for  adaptation

Explanation:

Explanation:

Answer:

how are genes expressed for a particular trait?

Genes are expressed in two ways which could be either genotype or phenotype

genotype reflects the dominancy or recessives of a particular trait over another while phenotype entails the physical expression of such trait which could be height, color of skin among others

e.g

If P is purple while p is white

PP x Pp= PP, Pp, PP. Pp these are the genotype produced from the crossing of two parents which results into 2 homozygous gene and 2 heterozygous gene without any recessive gene

while the phenotype shows that all the offspring are Purple

Explanation:

Explanation:

According to Hardy Weinberg, the gene and allele frequencies for a population should ideally remain unchanged (stable) over generations. However, assumptions by Hardy Weinberg for a population to be at equilibrium can hardly be held true, naturally. This is because;

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Hardy-Weinberg equilibrium is not common in natural populations due to various evolutionary forces such as mutation, migration, selection, genetic drift, and non-random mating.

In natural populations, it is rare for populations to be in Hardy-Weinberg equilibrium. Hardy-Weinberg equilibrium is a concept that describes an idealized population where the allele frequencies do not change from generation to generation. However, in reality, various factors such as mutation, migration, selection, genetic drift, and non-random mating can all disrupt the equilibrium.

For example, genetic drift is a random change in allele frequencies due to chance events. Small populations are more susceptible to genetic drift, and as natural populations are often small, they are more likely to experience random changes in allele frequencies.

Overall, Hardy-Weinberg equilibrium provides a useful theoretical framework, but it is not commonly observed in natural populations due to the presence of various evolutionary forces.

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Answer:

Good oral health and diet

fruits. vegetables. lean sources of protein such as lean beef, skinless poultry and fish; dry beans, peas and other legumes. low-fat and fat-free dairy foods.

Explanation:

Final answer:

Dietary modifications such as pureeing or chopping foods can help those with oral cavity problems eat more easily. Maintaining oral health is essential for overall well-being, as dental issues can lead to malnutrition and exacerbate other health conditions.

Explanation:

To accommodate those with oral cavity problems, dietary changes such as modifying food textures can significantly enhance the ability to eat comfortably. Solid foods can be pureed, ground, or chopped, which simplifies the process of chewing and swallowing, and minimizes the risk of aspiration. Oral health professionals such as speech therapists, dentists, and dietitians often collaborate to define suitable diets for individuals with dysphagia—a condition of impaired swallowing.

When dental issues prevent efficient chewing, the use of dentures or specially prepared softened foods like purees can be helpful. If there are difficulties with swallowing, increasing fluid intake during meals is advised. Consultation with healthcare professionals is important whenever chewing or swallowing issues arise.

Furthermore, a healthy oral environment is crucial for general well-being. Poor oral health can result in difficulty eating, malnutrition, and may exacerbate other health conditions, particularly in the elderly and those with serious illnesses. Therefore, ensuring a healthy mouth is essential not only for ease of food intake but also for maintaining overall health.

Answer:

BY comparing modern (today's) atmospheric CO2 level with historical (past) data in the graph.

Explanation:

Completed the test

By contrasting the current atmospheric CO2 levels with the historical data shown in the graph, scientists might utilise these data to determine if a new approach to the issue of global warming is effective.

This would enable them to ascertain if the new remedy is having an impact on CO2 levels in the atmosphere. Scientists may determine if the new solution is having an effect on the quantity of CO2 in the atmosphere by comparing the levels of atmospheric CO2 at now with those in the graph.

Scientists might also use fresh ice cores to collect new information about previous atmospheric CO2 levels in order to better assess the efficacy of the new approach. This would enable them to contrast present atmospheric CO2 levels with earlier ones.

The new approach was put into practise. If the new remedy is having an impact on the level of atmospheric CO2, scientists can tell by comparing the data from the fresh ice core samples with the data from the graph. Finally, researchers may contrast current atmospheric CO2 levels with information from other planets.

This would enable them to establish whether the new remedy is affecting the level of atmospheric CO2 globally. Scientists may evaluate if the new solution is having a beneficial impact on the quantity of atmospheric CO2 on a global scale by comparing the data from Earth with the data from another planet.

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A) Mutation is the original source of variations for plants and other organisms  which develops differences among their respective species

Explanation:

Genetic variation leads to the natural differences between each individual and among individuals of a species. The main cause for this variation is due to alleles that cause variations in the composition of genes or the DNA sequences.  

A mutation is a genetic variation which leads to the creation of a new allele in a species population. Each variation in the DNA sequence leads to an allele formation and each allele leads to a difference in character or trait between individuals since they are the alternate version of the original genes.  

Although genetic variations could be brought about by crossing over, random fertilization, or independent assortment; mutation is the original source because it provides the basic raw material for all the evolutionary changes.

Answer:

A

Explanation:

Answer:

false

Explanation:the small winds wehave down here dont effect the atmosheres heat the atmoshere is burning hot regardless.

A swan neck flask that prevented air from getting in was the control in Pasteur's experiment. Therefore, option (C) is correct.

The experiment was designed to test the hypothesis of spontaneous generation, which proposed that living organisms could arise spontaneously from non-living matter. To test this, Pasteur used swan-necked flasks that allowed air to enter but prevented microorganisms from getting in. The flasks containing the nutrient broth were boiled to sterilize the contents and the curved neck of the flasks prevented dust and microorganisms from entering.

The control group in this experiment was the flask with the nutrient broth that was not exposed to the external environment. This flask was used as a comparison to the experimental group, which was a flask with the nutrient broth that was exposed to the external environment. By comparing the growth of microorganisms in the two groups, Pasteur was able to demonstrate that microorganisms do not arise spontaneously from non-living matter, but rather come from pre-existing microorganisms.

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Answer:

It can burn branches and clear wood from the forest floor.

Explanation:

This provides space for growth.

Answer:

A fire in a forest ecosystem can burn low branches and clear dead wood from the forest floor, providing space for new growth.

Explanation:

Answer:

D

Explanation:

An everyday theory is known not to have large amounts of evidence supporting it.

It seems similar to a hypothesis only that in Science, a hypothesis leads to a test while an everyday theory can be a final say on an occurrence.

Answer:

Sample question: An everyday "theory” is a guess or hunch. A scientific theory is a reliable explanation that is supported by facts gathered over time through repeated observation and experimentation.

Explanation: