can anyone help me with number 2

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Evolutionary advantages. Lactase persistence is a text-book example of natural selection in humans: it has been reported to present stronger selection pressure than any other known human gene. However, the specific reasons as to why lactase persistence confers a selective advantage "remain open to speculation".

Lactase breaks down the lactose in food so your body can absorb it. People who are lactose intolerant have unpleasant symptoms after eating or drinking milk or milk products. These symptoms include bloating, diarrhea, and gas. Lactose intolerance is not the same thing as having a food allergy to milk.

In pastoralist populations, individuals with the lactase-persistence mutations were more likely to survive, reproduce, and pass on their alleles than people without the mutations, especially in times of famine.

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In the 1940's schultes was looking for curare plants with native groups so he could help people injured in WWII undergo surgery with a more powerful muscle relaxer is a true statement.

This is referred to as a type of plant which is an alkaloid and is known for its very high toxic content and is used in different parts of the world for different purposes.

It is used by individuals as a paralyzer of the motor nerves thereby making it to be used in anesthesia when different types of surgeries are being done by the individual.

This is therefore why it was also used for people who were injured in WWII who was going to undergo surgery so as to relax the muscles and ensure that there are no complications and it going on smoothly hence true is correct.

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The full question is:

in the 1940's schultes was looking for curare plants with native groups so he could help people injured in wwii undergo surgery with a more powerful muscle relaxer. true/ false

Explanation:

Even at rest, most neurons have periodic production of action potentials, known as the: spontaneous firing rate.

When a plant is injured, a mass of cells called a callus may grow over the site of the wound.

A callus is a thickening of the skin due to repeated friction, pressure, or other irritation. A callus typically forms on the hands, feet, or other areas of the skin that experience regular irritation. A callus is a lump of cells that develop over a wound in a plant. It's a natural response mechanism that allows the plant to heal.

When a plant's tissues are injured, such as when the bark is stripped or the stem is cut, the plant creates a mass of cells called callus tissue to protect itself.

Callus formation is an important part of plant regeneration. It serves as a protective barrier between damaged cells and the environment, while also assisting in the formation of new tissue

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Answer:

James Watson and Francis Crick on 2.

Answer:

hashish

Explanation:

opinum

Explanation:

because it is used to make pain nubbing/pain killer

Industrial emissions of sulfur dioxide, sulfates, and nitrogen oxides affect forests and croplands far away. Because these gases, when combined with water vapor, also cause acid rain.

Sulfur dioxide, sulfates, and nitrogen oxides, which are produced by industries, pollute the environment and cause eye and skin irritation when they combine with water vapor. When these gases combine with the cloud, they form acid rain, which can destroy crop land and forests due to its acidic nature. These gases have many other effects too.

Hence, Industrial emissions of sulfur dioxide, sulfates, and nitrogen oxides affect forests and croplands far away by causing acid rain,

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Answer:

it splits in half and down the middle

Answer:

Classify I beilieve!

Explanation: You would need to do this because in order for you to study it you would have to classify them.

1. The trophic level is something's position in the food chain/food web.

2. Energy travels through out the food chain because all the animals eat each other and take each other's energy. The decomposers are eaten, the producers are eaten, but the primary consumers get all the energy.

3. The energy decreases because each animal decomposes the energy a little, before getting eaten. By the time the food reaches the top of the web, the energy is barely left.

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Answer:

The word that best fits the definition of "land with different territories under a single rule" is "empire". An empire is a sovereign state consisting of multiple territories or regions, often spanning across different continents and cultures, all governed by a single ruler or government.

Relating the mutation with the resulting phenotype:

This type of mutation results in a premature stop codon which causes the protein sequence to be truncated. This can cause the protein to become non-functional and result in a phenotype.

This type of mutation changes one codon to another codon that codes for a different amino acid. This can result in a protein with a changed structure and/or function, and may lead to a phenotype.

This type of mutation does not change the protein sequence and therefore does not result in any phenotype.

This type of mutation involves the insertion or deletion of one or more nucleotides from the DNA sequence. It can cause the reading frame of the DNA to change, resulting in a completely different protein sequence. This can result in a phenotype.

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Answer:

An active transport is the movement, requiring energy, of ions or molecules across a membrane into a region of higher concentration.

Memory technique:

To help you remember the difference between active and passive energy, think of being active, like playing football or jumping rope. All these things require energy, just like an active transport. Passive transport does NOT require energy.

The pathophysiologic abnormality underlying systemic lupus erythematosus (SLE) is an autoimmune response. In SLE, the immune system mistakenly attacks the body's own cells and tissues, leading to chronic inflammation and damage.

This autoimmune response is characterized by the production of autoantibodies, which are antibodies that target the body's own proteins and DNA.
One key aspect of SLE is the formation of immune complexes, which are formed when autoantibodies bind to these self-proteins and DNA. These immune complexes can accumulate in various organs, such as the kidneys, joints, skin, and blood vessels, triggering an inflammatory response and causing tissue damage.
The exact cause of SLE is not fully understood, but it is thought to involve a combination of genetic, hormonal, and environmental factors. Certain genetic variations may increase the risk of developing SLE, and hormonal factors, such as estrogen, can influence the immune system's response. Additionally, environmental triggers, such as infections, medications, and exposure to ultraviolet light, can activate the immune system and contribute to the development of SLE.
In summary, the pathophysiologic abnormality in SLE involves an autoimmune response, characterized by the production of autoantibodies and the formation of immune complexes. This response leads to chronic inflammation and tissue damage in various organs. The development of SLE is likely influenced by genetic, hormonal, and environmental factors.

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I think you got it correct

answer

prophase

interphase

steps

prophase

During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes.

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chromosomes become visible during interphase, which involves the first three stages of the cell cycle such as the G1, S, and G2 phases.

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Answer: Biomagnification refers to the process by which the concentration of a contaminant increases as you move to higher trophic levels in a food chain or food web. In other words, as organisms consume other organisms, the contaminants present in the prey accumulate and become more concentrated in the bodies of the predators.

To understand this process, let's consider an example involving a water ecosystem. Suppose a pollutant is released into the water, such as a pesticide or heavy metal. The primary producers, such as algae or aquatic plants, absorb small amounts of the contaminant from the water. As herbivorous organisms consume these primary producers, they ingest the contaminants along with their food.

Since the contaminant is not easily broken down or eliminated from the organisms' bodies, it accumulates over time. As a result, the concentration of the contaminant becomes higher in the herbivores than in the primary producers. Now, when carnivorous organisms consume the herbivores, they not only accumulate the contaminant from their own food but also from all the prey they have consumed. This leads to an even higher concentration of the contaminant in the carnivores.

Therefore, biomagnification describes the phenomenon where the concentration of a contaminant increases significantly as you move up the food chain or trophic levels. The highest concentration of contaminants is often found in top predators, such as large fish, birds of prey, or mammals, which can have adverse effects on their health and reproductive capabilities.

It's important to note that biomagnification primarily occurs for persistent and non-biodegradable contaminants that cannot be easily metabolized or excreted by organisms. These contaminants are often lipophilic (fat-soluble), which allows them to accumulate in fatty tissues and remain in the organism's body for long periods, leading to biomagnification.

Explanation:

The genotypic ratio of all possible zygotes produced by two heterozygous parents with traits controlled by genes on separate chromosomes is 9:3:3:1.

Let's consider an example where one parent is heterozygous for trait A (Aa) and the other is heterozygous for trait B (Bb). When these parents reproduce sexually, they can produce four different types of gametes: AB, Ab, aB, and ab.

The possible genotypes of the offspring can then be represented in a Punnett square, with the gametes from one parent listed on the top and the gametes from the other parent listed on the side. The resulting squares in the Punnett square represent the possible genotypes of the offspring.

In this case, the genotypic ratio of the possible zygotes is 9:3:3:1, which means that out of every 16 offspring, 9 will have both dominant traits (AABB or AaBB or AABb), 3 will have one dominant and one recessive trait (AaBb or AABb or AaBB or Aabb or aaBB or AaBb), 3 will have the other dominant and recessive traits (AABB or AaBB or AaBb or AAbb or aaBB or AaBb), and 1 will have both recessive traits (aabb).

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The primary functions of whales include feeding, reproduction, communication, and migration.

Whales are primarily filter feeders or predators, depending on the species.

Filter-feeding whales, such as baleen whales, have baleen plates in their mouths that allow them to filter out small prey, such as krill or small fish, from large volumes of water.

Predatory whales, such as toothed whales, hunt and feed on various marine organisms, including fish, squid, and marine mammals.

Reproduction is another important function for whales. Most whale species have a gestation period of several months, with females giving birth to a single calf.

The calves are nursed with milk from their mothers and rely on their care for a period of time until they become independent.

Communication is vital for whales, as they rely on vocalizations to communicate with other members of their pod.

Whales produce a variety of sounds, including songs, clicks, and whistles, which serve purposes such as mating, social interactions, and navigation.

Migration is a common behavior observed in many whale species. Whales undertake long-distance migrations, often covering thousands of kilometers, to reach feeding grounds in nutrient-rich waters or to reproduce in specific breeding areas.

These migrations are driven by seasonal changes in food availability and environmental conditions.

In summary, the primary functions of whales encompass feeding, reproduction, communication, and migration, all of which are essential for their survival and successful adaptation to their marine environments.

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In the third phase of Pavlovian experiment, the child's response of crying upon seeing the toy is an example of a conditioned response.

This means that the child has learned to associate the sight of the toy with the feeling of being separated from their caregiver and has developed a conditioned emotional response. This response is a result of repeated pairings of the toy with the separation experience, causing the child to anticipate the separation and become upset upon seeing the toy.

This is a classic example of classical conditioning, where a neutral stimulus (the toy) becomes associated with an unconditioned stimulus (the separation) and elicits a conditioned response (crying). Overall, this experiment demonstrated how learning and association can affect an individual's emotional response to certain stimuli.

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The statement "most SNPs arose by mutations that occurred only once during human history" is true. Most SNPs in the human genome have arisen due to single, unique mutation events throughout history, and they provide valuable information for understanding human evolution, migration, and genetics.

SNPs, or Single Nucleotide Polymorphisms, are DNA sequence variations that occur when a single nucleotide (A, T, C, or G) in the genome is altered. These variations can be used as biological markers to help scientists identify genes associated with certain diseases or conditions.  During human history, most SNPs have arisen through mutations that occurred only once. This is because each SNP represents a unique event in the evolution of a species, and the likelihood of the same mutation occurring multiple times is extremely low.

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Assuming that the equation h = 2.71cm (Ifemur) + 45.86cm correctly estimates the victim's height (h) based on the length (Ifemur) of their femur, we can use it to estimate the victim's height based on the length of the femur discovered in the shallow grave.

What exactly does forensic science entail?

In the laboratory, a forensic scientist examines samples found at crime scenes such as hair, bodily fluids, paint, glass, and drugs. An assessment is a useful participant system that is used to evaluate crime scenes or conditions.

When the given femur length of 15 cm is substituted into the equation, we get:

2.71cm (15cm) + 45.86cm h = 40.65cm + 45.86cm h = 86.51cm

As a result of this equation, the victim's height is estimated to be 86.51 cm.

Therefore, it is important to note that this is only an estimate and may not be accurate for every individual.

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Answer:

A.

Explanation:

Answer:

1.) Asexual and sexual

Untreated gonorrhea can lead to Infertility in women and can cause pelvic inflammatory disease. Pelvic Inflammatory Disease (PID) can result in scarring of the tubes, greater risk of pregnancy complications and infertility.

Answer:

You could personally reduce the levels of waste in society by picking up your trash and throwing it away, and not littering. You can also pick up any garbage you find on the ground whenever your walking around in public.

These are just simple ideas to help reduce waste, but by using these examples, you can get the idea by doing things like these.

Explanation:

May I have Brainliest please? My next rank will be the highest one: A GENIUS! Please help me on this journey to become top of the ranks! I would really appreciate it, and it would make my day! Thank you so much, and have a wonderful rest of your day!

(Nice profile picture by the way! SHEEESH)

Answer:

I think it is moving, hope it helps

It is crucial for water to be reclaimed from the digestive system primarily due to its essential role in maintaining proper bodily functions and preventing dehydration.

Water plays a vital role in digestion, as it helps break down food, absorb nutrients, and facilitate waste elimination. During the digestive process, water is absorbed through the intestinal walls into the bloodstream.

If water is not reclaimed efficiently from the digestive system, excessive loss can occur, leading to dehydration. Dehydration can have severe consequences on overall health, affecting various bodily functions such as circulation, temperature regulation, and organ function. It can lead to fatigue, dizziness, impaired cognitive abilities, and even life-threatening situations if left untreated.

The reclamation of water from the digestive system ensures that the body maintains a proper balance of fluid levels, preventing dehydration and supporting optimal physiological functioning. Efficient water reabsorption is crucial for maintaining overall health and well-being.

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Answer: Synthetic

Explanation: Artifical implies that it does not naturally occur, so it has to be done by man, hence the Synthetic answer.

In the given scenario, where pigweed has developed resistance to herbicides and poses challenges to cotton production in the deep south, the horizontal axis of the Production Possibilities Curve (PPC) could be labeled as "Labor-Intensive Techniques vs. Mechanization."

This labeling reflects the trade-off between employing labor-intensive techniques, such as manual weeding to control pigweed, and relying on mechanization, represented by the use of tractors and herbicides. The PPC illustrates the different combinations of labor-intensive techniques and mechanization that can be utilized in cotton production.

On one end of the spectrum, allocating more resources towards labor-intensive techniques involves manual labor for removing pigweed, which requires additional human effort and potentially higher costs. This option is depicted at one extreme of the horizontal axis.

On the other end, increasing mechanization implies a greater reliance on machinery, such as tractors and herbicides, to control pigweed efficiently. However, the resistant weed's ability to damage tractors introduces limitations and risks associated with this approach. This alternative is represented at the opposite extreme of the horizontal axis.

The PPC showcases the various trade-offs between labor-intensive techniques and mechanization, aiming to find an optimal balance that maximizes cotton production while effectively managing the challenges posed by pigweed resistance. It helps decision-makers visualize the available choices and make informed decisions regarding resource allocation and management strategies in response to the pigweed issue.

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