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When using a dichotomous key, what question about a specific characteristic would best help you distinguish between a goldfish and a snake?
OA Does the animal have feet?
OB. Does the animal breathe under water?
OC Does the animal have scales on its body?
OD. Does the animal have a mouth?

Lamarck's theory of Inheritance of Acquired Characteristics proposed that an organism experiences modification that can be transmitted to its offspring. However, Darwin's Theory of Natural selection disproved the Lamarckian theory. Many biologists have tested this theory (Lamarckian theory) and the result is, more evidence is being demonstrated that the traits and behavior of organisms were the results of natural selection; hence, these changes are mainly controlled by genes.

The lab report is composed of two sections:

Section I: Overview of Investigation

Answer:

is there any more information you could provide?

what is the lab report about?

Explanation:

Provide background information.

Summarize the procedure.

Section II: Observations and Conclusions

Include any charts, tables, or drawings required by your teacher.

Include answers to follow-up questions.

Answer:

which lab is it wth

Explanation:

Answer:

B.) It allows the giraffe to get food from tall trees that other animals cannot reach.

Explanation:

-

One of the distinguishing characteristics of a giraffe is its long neck. The neck has several important roles and specific functions Feeding. With the aid of its long neck a giraffe is able to reach leaves fruit and flowers high up in Vachellia or Senegalia. Formerly Acacia and other sought after tree species. Giraffe are thus equipped to exploit a band of foliage. So answer would be B

The two natures of insular biotas refer to their isolation and unique ecological characteristics. Insular biotas are typically isolated from mainland ecosystems and have evolved in distinct ways due to their insularity.

Two natures of insular biotas are:

1. Isolation: Insular biotas, being located on islands or isolated areas, experience limited interaction with other ecosystems. This results in unique species compositions and adaptations due to the absence of certain external influences.

2. Endemism: Insular biotas often have high levels of endemism, meaning many species found in these ecosystems are unique to that specific location. This is a result of the isolation, which allows species to evolve independently from their mainland counterparts.

This isolation has led to the development of unique species and communities, as well as increased vulnerability to threats such as invasive species and habitat loss.

The insular nature of biotas also means they are often more sensitive to environmental changes, making conservation efforts crucial for their survival.

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Answer:b?

Explanation:

Answer:

A The water would be less clean because there would be fewer kinds of organisms to clean it.

Explanation:

Stones in the bile ducts are broken up using shock waves during an extracorporeal shock wave therapy.

Extracorporeal shock wave lithotripsy is a treatment to remove stones from the bile ducts, pancreatic duct, or urinary system using a succession of shock waves produced by a lithotripter. An X-ray is used to target the shock waves as they enter the body.

Depending on the region treated, a shockwave therapy might cost between $200 and $500. When you visit the doctor's office to get diagnosed and find out if Shockwave is suited for you, you'll have to pay an usual doctor visit fee, which is a separate expense if your insurance doesn't cover the cost.

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The expected phenotypes from the dihybrid cross would be 25% green and round, 25% green and oval, 25% stripped and round, and 25% stripped and oval.

The cross has to do with 2 traits. The first trait is color and the second trait is shape.

Solid green is represented by G, stripped green is represented by g, round shape is represented by R, and oval shape is represented by r.

Thus:

Crossing the two watermelons:

             GgRr   x   ggrr

Offspring:

GgRr: green, round = 1/4 or 25%

Ggrr: green, oval = 1/4 or 25%

ggRr: stripped, round = 1/4 or 25%

ggrr: stripped, oval = 1/4 or 25%

Thus, the expected phenotype ratio of the offspring is 1:1:1:1 green round, green oval, stripped round, and stripped oval.

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Since we want to compare population means and there are two independent samples. We must apply: t-test for two samples,

Divide the difference between the means of the two samples by the estimated standard error, either pooled or unpooled, to get the test statistic for a two-sample independent t-test. The expected standard error serves as a proxy for the overall degree of variation in both groups.

The two-sample t-test, also known as the independent samples t-test, is a method for determining whether or not the unknown population means of two groups are equal.

With unknown and potentially distinct population standard deviations, the Aspin-Welch t-test contrasts two independent population means.

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Answer:

Explanation:

Yes, the disease specialist's explanation is plausible based on what we know about evolution by natural selection. Let me break it down for you in simpler terms.

The disease specialist is suggesting that the tropical fungus mentioned by your colleague might be related to the fungal pathogen causing the illness at the hospital. They explain that even though the tropical fungus may have been brought to Vancouver Island some time ago, it might not have caused any illness until now. This could be because the tropical fungus was originally adapted to a different environment and couldn't infect people in the new environment of Vancouver Island.

Now, here's where evolution by natural selection comes into play. Over time, organisms can undergo changes in their traits and abilities through a process called natural selection. Mutations, which are changes in the genetic material of organisms, can happen randomly. If a mutation occurs in the tropical fungus that enables it to infect individuals in the Vancouver Island environment, it could be favored by natural selection.

For example, let's say that due to a mutation, the tropical fungus developed adaptations that allowed it to thrive in the new environment and infect people. These adaptations might include changes in its ability to penetrate human cells or evade the immune system. As a result, the fungus would become more successful at causing infections in the Vancouver Island population.

So, the disease specialist's explanation is plausible because it suggests that over time, through natural selection acting on mutations, the original tropical fungus could have evolved adaptations that made it capable of causing illness in the new environment of Vancouver Island.

Answer:

Its the bottom because its located in the bottom

Explanation:

a basic law of geochronology, stating that in any undisturbed sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.

The primary path by which electrons travel downhill energetically during aerobic respiration is through the electron transport chain.

In aerobic respiration, glucose is first broken down through a series of steps called glycolysis, which occurs in the cytoplasm. During glycolysis, glucose is converted into pyruvate, and a small amount of ATP and NADH are produced.

Next, the pyruvate enters the mitochondria and is converted into acetyl CoA in a process called pyruvate-acetyl CoA. This step generates more NADH and a small amount of ATP.

Then, the acetyl CoA enters the citric acid cycle, also known as the Krebs cycle. In this cycle, acetyl CoA is further broken down, releasing more NADH and ATP.

Finally, the NADH molecules produced in the previous steps are oxidized in the electron transport chain, which is located in the inner membrane of the mitochondria. As the electrons move along the electron transport chain, energy is released and used to pump protons across the membrane. This creates a proton gradient that drives the synthesis of ATP through a process called oxidative phosphorylation.

At the end of the electron transport chain, the final electron acceptor is oxygen. Oxygen acts as the terminal electron acceptor, combining with electrons and protons to form water.

Therefore, the correct answer is: glucose - glycolysis - pyruvate-acetyl CoA - citric acid cycle - electron transport chain - oxygen.

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Calcium is an example of an element. An element is a substance that cannot be broken down into simpler substances by chemical means. Correct option is a.

It is composed of only one type of atom. Calcium is represented by the symbol Ca on the periodic table and has an atomic number of 20. Elements like calcium have distinct properties that differentiate them from compounds and mixtures. For example, calcium is a silver-gray metal with a high melting point and reacts vigorously with water.

It is commonly found in the Earth's crust and plays a vital role in various biological processes, including bone formation and muscle contraction. In contrast, compounds are substances composed of two or more elements chemically combined. For instance, calcium carbonate (CaCO3) is a compound made up of calcium, carbon, and oxygen atoms.

Homogeneous mixtures have a uniform composition throughout, like salt dissolved in water. Heterogeneous mixtures, on the other hand, have visibly distinct components, such as a salad with different vegetables. Hence, correct option is a.

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The  F1 off springs alleles in Mendel's work are  dominant alleles.

An allele is one of several forms that a gene may take on, whilst genes themselves represent the fundamental components responsible for passing on hereditary information and comprise DNA molecules.

Alleles occur at specific locations or loci within chromosomes and humans display diploidy- inheriting a pair of chromosomes (one from each parent)- which denotes that every person possesses two distinctive alleles per gene.

Mendel's experiments have shown that the F1 generation displayed heterozygous characteristics across all observed traits. To put it simply, these offspring inherited one dominant and one recessive allele each.

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Correct question: What alleles do the F1 offspring have? Explain which allele was inherited from each parent.

The probability of having a werewolf born with round fangs and long hair is 0%.

To determine the probability of having a werewolf born with round fangs and long hair, we need to look at the offspring genotypes and use the rules of probability.

The cross and the offspring produced is shown below:

Parents: FFHh x ffhh

Offspring: FfHh,  FfHh, FfHh, FfHh, FfHh, FfHh, FfHh, FfHh, Ffhh, Ffhh, Ffhh, Ffhh, Ffhh, Ffhh, Ffhh, Ffhh

The Punnett square shows that the probability of an offspring having the ffHh genotype is 0/4, or 0%.

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The Echinoidea class has a globose and discoidal body, with no arms. They have a skeleton composed of plates with spikes. Ambulacral feet are in charge of motion, feeding, and respiration. A) Covered in spikes and have several tube feet.

Echonoidea, commonly known as Sea ​​urchins, belong to the Echinoderm group.

They have a globose or discoidal shape. They lack arms, and have an external skeleton covered by the epidermis. This skeleton is composed of several plates with articulated mobile spikes.

In the body interior there is a duct system that communicates with the exterior through the madreporite. Ambulacral feet derivate from these ducts and have motion, feeding, and respiratory functions.

On the dorsal region, there are 5 plates, one of them the madreporite and the remaining ones are reproductive plates.

According to this information, option A is correct. Echinoidea class is covered in spikes and have several tube feet.

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Answer:

it's C

Explanation:

I took the exam

Niche is what organism describe.

In biology, an is any organic, living machine that features as an man or woman entity. All organisms are composed of cells. Organisms are categorized by way of taxonomy into companies inclusive of multicellular animals, plants, and fungi; or unicellular microorganisms which includes protists, micro organism, and archaea.

All living organisms are made up of one or greater cells, which might be taken into consideration the fundamental devices of existence. Even unicellular organisms are complex! inside every cellular, atoms make up molecules, which make up cell organelles and structures. In multicellular organisms, comparable cells form tissues.

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The majority of animals and plants have both lipid and carbohydrate energy reserves; lipids work as a long-term energy source and are typically used more slowly than carbohydrates as an instant energy source.

For instance, starch in plants and glycogen in animals both act as store molecules.

It serves as the primary energy source. Fiber, for instance, is a carbohydrate that facilitates digestion.

Glycoproteins are carbohydrates linked to proteins as well the Glycolipids are carbohydrates connected to lipid.They are what make up nucleic acids.

Cellulose makes up the walls of bacterium and plant cells.Within the body, lipids serve three main biological purposes: they are essential for the structure of cell membranes, act as energy stores, and serve as power sources.

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Answer:

1) taxonomy

2) species

3) the animal has sharp, pointed teeth

4) the current taxonomic system is based on the Linnaean system

5) he only had two kingdoms, animals and plants

Explanation:

did the quick check

The observation about the animal that will be helpful in finding its taxonomic classification is B. The animal has sharp, pointed teeth.

Taxonomy refers to the science of the classification of organisms into groups. The classification is based on the characteristics that the organisms have.

Therefore, in a situation whereby the person is unfamiliar with an animal, the shape of the teeth of the animal can be used for its classification.

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Answer:

Reptiles, like early dinosaurs.

metabolism is (A) both catabolism and anabolism. Anabolism and Catabolism are two metabolic processes, or phrases.

catabolism is (B) reaction that breaks a larger molecules into smaller ones.

anabolism is (C) reaction that combines smaller molecules to make a large molecule.

Structure W is a chloroplast and structure X is the nucleus in the image of an eukaryotic cell. The image of a plant cell is represented by structure W.

What do plant cells do?

The cell is the basic building block of life for species found in the kingdom Plantae. They are eukaryotic cells, which have specialized subunits called organelles and a functional nucleus. Plant cells are a type of photosynthetic eukaryote found in green plants, which are members of the kingdom Plantae.

Unique organelles called chloroplasts are found in plant cells and they use photosynthesis to make carbohydrates. The cell is the smallest unit in all plants. Plant cells are eukaryotic, which means they have a membrane- and organelle-bound nucleus.

Cell walls, intracellular vacuoles, and chloroplasts are a few examples.

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Answer: increasing the food supply

Explanation:

genetically modified crops are used to increased food supply and decrease shortage of food.

it's an unicellular organism (:

Explanation:

i think its letter

D.

Thank me letter

The statement that is the best example of a potential benefit to society that could result from this biotechnology is an increase in orange crop yield.

Genetically engineered crops may be defined as those crops whose genetic material is modified in such a way that does not occur naturally.

If orange trees are produced as resistant to disease, it may increase the productivity of orange trees.

Apart from this social view, there may be a change in the distribution of insects that pollinate the orange flower is also seen.

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The production of antibodies inside the lymphocytes starts at the ribosome (organelle) by joining amino acids together, creating peptide bonds, and forming the primary level structure polypeptide. The polypeptide bends and folds tertiary in the Golgi apparatus (organelle), to form the next level of structure. For instance, the secondary level of structure is formed by hydrogen bonds to create alpha helix or beta-pleated formations.

In order for an antibody to be released into the blood, a fully formed antibody will move from rough endoplasmic reticulum (organelle) to another organelle named Golgi apparatus to sort and be processed for shipment out of the cell. Antibodies transport from organelle to organelle and to the plasma membrane in a vesicle, which is made out of fatty acids-phospholipids.

1. fatty acids

2. amino acids

3. phospholipids

4. hydrogen

5. peptide

6. tertiary

7. secondary

8. rough endoplasmic reticulum (organelle)

9. ribosome (organelle)

10. Golgi apparatus (organelle)

11. vesicle

B. The coral animals are always found in nutrient-rich waters.

Anthozoan corals are characterized by several features, but they are not always found in nutrient-rich waters, which is why option B is incorrect. Anthozoan corals belong to the class Anthozoa, which is a class of cnidarians (option E).

Anthozoan corals are known for their hard calcium carbonate exoskeletons, which are secreted by the coral animals themselves (option A). These exoskeletons contribute to the formation of coral reefs and other structures, such as shallow-water limestone ridges (option C). Many anthozoan corals engage in a symbiotic relationship with photosynthetic algae called zooxanthellae, which live within their tissues and provide them with energy through photosynthesis (option D).

While some coral species may prefer nutrient-rich waters, it is not a characteristic shared by all anthozoan corals. Coral distribution is influenced by various factors, including water temperature, light availability, water motion, and nutrient levels. Some coral species can thrive in nutrient-poor oligotrophic waters as well.

In summary, anthozoan corals are characterized by the presence of hard calcium carbonate exoskeletons, their contribution to the formation of limestone structures, their symbiotic relationship with algae, and their classification as a class of cnidarians. However, they are not exclusively found in nutrient-rich waters.

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If the "Clay Mammoth" is associated with ancient humans, it would push the presence of humans in North America back by 30,000 years.

The presence of arrowheads nearby and a rib bone with linear scratches on it are both lines of evidence that suggest human presence at the time of the mammoth fossil. Arrowheads indicate human activity, and scratches on the rib bone may indicate butchering or tool use by humans.

However, the presence of boulders along with the bones is not directly linked to human activity. It is possible that the boulders were part of the natural environment or were moved by geological processes rather than being associated with human presence.

If the "Clay Mammoth" is indeed associated with ancient humans, it would push the presence of humans in North America back by 30,000 years. This indicates that humans had a presence in North America much earlier than previously believed. This finding would provide important insights into the timeline of human migration and settlement in the region.

It's worth noting that the provided image and additional questions about geological phenomena responsible for trapping mastodons are not clear in the question and cannot be addressed without further information.

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