Which statement best describes a command economy?

Answer:

Activation Energy

YW!

Explanation:

Speciation events can be caused by prezygotic barriers that prevent populations of organisms from mating with one another. This assertion is accurate.

Reproductive isolation is the condition in which biological barriers prevent members of two species from interbreeding. Prezygotic barriers: prevent ova from fertilizing if members of different species try to mate, or prevent mating across species.

Hybrids are more likely to form in populations divided by physical barriers that cause speciation because people cannot physically interact with one another. The hybridization zone is a region of habitat where this kind of interaction and mating frequently takes place.

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The circulatory system is found in humans but not in flatworms.

The circulatory system is in charge of transporting blood and nutrients throughout the body. This system in humans is made up of the heart, blood vessels (arteries, veins, and capillaries), and blood.

However, because flatworms lack a circulatory system, nutrients and gases are exchanged directly between cells and the environment via diffusion over the body surface. Humans have a circulatory system, but flatworms do not.

Flatworms have a rudimentary excretory system, neurological system, and digestive system, but they lack many of the specialised organs and systems seen in more sophisticated organisms such as humans.

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Answer: Meiosis is the process of chromosomal reduction in eukaryotic cells (plants, animals, and fungi), which leads to the production of germ cells (gametes/sex cells) needed for sexual reproduction. In this way, the chromosomal number of the species is conserved through sexual reproduction.

Answer:

Changes to short stretches of nucleotides are called gene-level mutations, because ... A deletion mutation occurs when a wrinkle forms on the DNA template strand and ... sequence with a different set of reading frames is transcribed to mRNA (b). ... can also lead to another type of mutation known as a frameshift mutation

Answer:

C] 10,000 years

Explanation:

It usually takes a million or more years. The longer, the more identifiable.

Answer: Prophase!

Explanation:

feed upon dead organic matter,include bacteria and benthic worms, recycle organic matter back to inorganic nutrients.

The global forestry industry is facing various challenges, including deforestation, climate change, and increased demand for wood products. However, efforts are being made to promote sustainable practices, such as forest management and reforestation initiatives.

Technological advancements and an increased focus on environmental conservation have led to improved efficiency in the industry, as well as more environmentally friendly practices.
Most of the world's lumber supply comes from two major regions: North America and Europe. North America, particularly the United States and Canada, has a large forestry industry with abundant forests and a strong infrastructure for timber production. Canada is one of the world's leading producers of softwood lumber, while the United States produces both softwood and hardwood lumber.
Europe also contributes significantly to the global lumber supply, with countries like Russia, Sweden, and Finland being major players in the industry. Russia has vast forests, and its timber industry is a crucial part of its economy. Sweden and Finland, with their advanced forest management systems, produce high-quality softwood and hardwood lumber.
In conclusion, the current state of the world's forestry industries is shaped by various challenges and opportunities, with a growing focus on sustainability and technological advancements. North America and Europe are the two major regions supplying the world with lumber, each contributing significantly to the global production of wood products.

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The difference in height between the two bottles is 30 millimeters.

To calculate the difference in height between the two bottles in millimeters, we need to convert the heights from centimeters to millimeters and then subtract one from the other.

First, we convert the height of the first bottle from centimeters to millimeters. Since there are 10 millimeters in a centimeter, we can multiply the height of 12 centimeters by 10 to get the height in millimeters:

12 centimeters * 10 millimeters/centimeter = 120 millimeters.

Next, we convert the height of the second bottle from centimeters to millimeters using the same conversion factor. We multiply the height of 15 centimeters by 10:

15 centimeters * 10 millimeters/centimeter = 150 millimeters.

Now that we have both heights in millimeters, we can calculate the difference. We subtract the height of the first bottle from the height of the second bottle:

150 millimeters - 120 millimeters = 30 millimeters.

Therefore, the difference in height between the two bottles is 30 millimeters.

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Cellular respiration is improved by the presence of the highly folded surface of the inner mitochondrial membrane. Thus the correct option is c.

Cellular respiration is a metabolic process that releases energy stored in glucose molecules in the presence of oxygen. The mitochondria are the organelles that conduct cellular respiration.

Mitochondria contain a highly folded inner membrane that increases the surface area available for chemical reactions to occur.

The inner mitochondrial membrane is highly folded into cristae, which increases the amount of space for the electron transport chain to occur.

This gives the electron transport chain more surface area to work with, improving the productivity of cellular respiration.

Therefore, it is the highly folded surface of the inner mitochondrial membrane that improves the productivity of cellular respiration. Thus option c is correct.

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The Permian mass extinction occurred about 250 million years ago, and it is thought to have been caused by a combination of factors including extreme volcanic activity, climate change, and an asteroid impact.

The Permian mass extinction is one of the five known mass extinctions that the Earth has undergone throughout its history. It is thought to have been caused by a combination of factors, including extreme volcanic activity, climate change, and an asteroid impact.

The extinction led to the loss of about 96% of marine species and 70% of terrestrial species. Volcanic activity is believed to have played a major role in the Permian mass extinction. The Siberian Traps, a massive volcanic eruption that lasted for about a million years, released huge amounts of carbon dioxide and other gases into the atmosphere.

This led to climate change, including global warming, and acidification of the oceans, which caused widespread extinctions of marine organisms. The warming of the planet also led to changes in weather patterns, which caused severe droughts and the loss of vegetation.

According to the evidence, an asteroid impact could also have contributed to the Permian mass extinction. Scientists have discovered evidence of an impact in Antarctica that dates back to the Permian era. The impact could have caused global cooling, which would have added to the already extreme environmental changes caused by volcanic activity.

Therefore, the Permian mass extinction was caused by a combination of factors that led to global environmental changes.

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The majority of organic molecules in living systems are proteins, which play a key role in a cell's structure, function, and distinctive characteristics.

Protein is used by the body in a variety of ways. It fosters tissue growth and repair, encourages metabolic reactions, and synchronizes biological processes. Your body's structural foundation is provided by proteins, which also guarantee ideal pH and fluid equilibrium.

They also transport and store nutrients, help maintain a robust immune system, and, if required, can act as a source of energy. Because of all of these tasks, protein is one of the nutrients that is most important for your health.

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Even if all the cells have the same DNA they biochemical function are different, that's because differents sets of genes must be turned on and off in each cell type by the action of enzymes and other molecules. Each cell have the same 20,000 or so genes but they are biochemically selected by the action of molecules as hormones and chemical signaling. Therefore, different cells use different parts of the DNA code as directions.

The body composition assessment method that involves the estimation of the 3-dimensional volume of the body through measurement of an individual’s body weight while they are completely submerged under water is Hydrodensitometry.

Hydrodensitometry is based upon the Archimedes principle. It provides information of two components:  the fat mass and the fat-free mass. It is also called under-water weighing. This technique is not commonly used, however it is mostly used on athletes.

Body composition assessment is the method to calculate the ratio of fat-to-fat free mass. The composition if assessed to gain knowledge about the fitness of the body.

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The photo shows a subduction zone between two oceanic plates. When two oceanic plates are converging, one is overridden and the other is pushed down the asthenosphere. The boundary of the subduction zone is usually marked by deep trenches.

ANSWER: C) Plate A is oceanic and Plate B is oceanic.

Answer:

sponges, cnidarians, marine worms, lophophorates, mollusks, arthropods, echinoderms and the hemichordates.

Explanation:

Answer:

sponges, cnidarians, marine worms, lophophorates, mollusks, arthropods, echinoderms and the hemichordates.

Explanation:

Found answer on google

also can u pls mark me brainliest im new

Answer:

Mitochondria

Explanation:

Have a nice day

Answer: The change in the structure of the genes or change in the DNA sequence is called mutation. The mutations are of different types that are deletion, rearrangement, insertion and others.

Explanation:

Mutation in which the one to several nucleotides get changed at a point is called point mutation. The point mutation can be in the form of deletion, substitution, and insertion. Deletion will involve the removal of nucleotide that involves the change in the sequence of DNA. When the nucleotide is added to the genome it is called insertion. In deletion and insertion the whole sequence of nucleotides from the point of mutation get displaced this affect the codons in the amino acid sequence which is responsible for protein synthesis so the functioning of the body may get affected by such mutations.

In the case of substitution the new nucleotides are added to the DNA sequence and the one which was already present at that place is removed. So, only one amino acid in the sequence will change so the polypeptide structure will not be affected.          

When there is a change in the structure of the genes or there is any change in the DNA sequence so we called them mutation.

The mutation is considered when there are several nucleotides that varied at a point is known as the point mutation. The point mutation could be in various forms like deletion, substitution, and insertion. Deletion includes the elimination of nucleotides that includes the change in the sequence of DNA. At the time when the nucleotide is added to the genome, it is known as insertion.

In substitution, the new nucleotides should be added to the DNA sequence and the one i.e. available at that place is removed. Due to this, the polypeptide structure will not be impacted.          

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The given statement "Leukemia is a general term applied to any neoplastic disorder of the lymphoid tissue" is False. Leukemia is a cancer of the blood or bone marrow that arises from the abnormal proliferation of immature blood cells.

The cells crowd out normal cells, leading to the deficiency of red blood cells, platelets, and white blood cells. It is not limited to the lymphoid tissue but affects the bone marrow and blood cells in general.Lymphoma is a type of cancer that arises in the lymphatic system, which includes the lymph nodes, spleen, thymus gland, and bone marrow.

It is considered as a neoplastic disorder of the lymphoid tissue. Leukemia, on the other hand, is a neoplastic disorder of the blood-forming cells. Therefore, it can be inferred that leukemia is not a general term applied to any neoplastic disorder of the lymphoid tissue, but rather, it is a specific type of cancer that affects the blood and bone marrow.Moreover, the incidence of leukemia varies by age.

Acute lymphoblastic leukemia (ALL) is more common in children, while acute myeloid leukemia (AML) is more common in adults. Chronic lymphocytic leukemia (CLL) and chronic myeloid leukemia (CML) are more common in older adults. The treatment for leukemia may include chemotherapy, radiation therapy, stem cell transplantation, and targeted therapy, among others. In conclusion, leukemia is not a general term applied to any neoplastic disorder of the lymphoid tissue. It is a specific type of cancer that affects the blood and bone marrow, and it requires prompt and appropriate treatment for better prognosis.

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Most Frequent compounding leads to a higher effective annual rate (EAR), all else equal.

Compounding is the process of adding accumulated interest back to the principal amount, resulting in interest earned on both the principal and previously earned interest. The frequency of compounding, such as annually, semi-annually, or monthly, affects the effective interest rate that an investment earns over time.

The more frequently interest is compounded, the higher the effective annual rate (EAR) will be, assuming all other factors remain equal. This is because more frequent compounding results in more interest being earned on the previous interest, leading to a compounding effect that amplifies the overall return.

For example, if an investment has an annual interest rate of 5%, compounded annually, the EAR would be 5%. However, if the same investment were compounded monthly, the EAR would be higher due to the compounding effect. In this case, the EAR would be 5.12% because the interest is being compounded 12 times per year.

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When a natural disaster dropped their total world population down to less than seven individual cheetahs.

Answer: D brilliant is not an adverb its a adjective

also A isn't either tho bc that sentence has no adverbs but my best guess is D i hope its right! (:

Explanation: slowly in C is, and morning in B is, brilliant is not its a adjective

After association with an unconditioned stimulus, a CR is induced by a first neutral stimulus. This should be shown a half second before the US for the most rapid conditioning.

What is Conditional Stimulus?

A stimulation that eventually causes a conditioned reaction is known as a conditioned stimulus. The ringing of the bell served as the conditioned stimulus in the experiment reported, while salivation served as the conditioned response. Remember that the neutral stimulus changes into the conditioned stimulus.

Every time a bell rings, the hotel concierge starts to answer. The bell has evolved into a conditioned stimulus as a result of its association with the sight of consumers in need of assistance.

A CR is brought on by an initial neutral stimulus following association with an unconditioned stimulus. For the fastest conditioning, this should be shown a half second before the US.

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1. The null hypothesis for GLM is False.

While both linear regression and generalized linear models (GLMs) involve hypothesis testing, the null hypothesis is not the same for both. In linear regression, the null hypothesis typically assumes that there is no relationship between the independent variable(s) and the dependent variable, and any observed relationship is due to random chance.

In GLMs, the null hypothesis depends on the specific application and the type of GLM being used. It could involve testing the significance of specific predictors or comparing different models.

2. The statement "The link function is exactly the same as a transformation because it operates on the Ys" is False.

In GLMs, the link function is not the same as a simple transformation of the dependent variable. The link function relates the linear predictor (a function of the predictors) to the expected value of the dependent variable. It serves to model the relationship between the predictors and the response variable while accommodating different types of data distributions and addressing non-linearity.

On the other hand, a transformation of the dependent variable would directly alter the scale or shape of the data, without explicitly modeling the relationship with the predictors.

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Answer:

transcription will not begin

Explanation:

rawrs! have a great day! :3

RNA polymerase is the main enzyme to start the transcription of DNA, if it fails to bind at the promoter start site of initiation, transcription will not initiate, hence option 2 is correct.

If RNA polymerase misses, one of the rRNA subunits cannot be transcribed from DNA. RNA polymerase and the transcription factors needed for transcription bind to the promoter region and start transcription.

Promoter sequences determine the direction of transcription and which DNA strand will be transcribed this strand is known as the sense strand, RNA polymerase produces RNA by following a DNA strand.

RNA polymerase is an enzyme that transforms a DNA sequence into an RNA sequence during the transcription process.

Therefore to start the initiation of transcription is a major step in the synthesis of RNA and using RNA polymerase fit is not bind to the promoter, transcription will not begin, hence option b is correct.

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