the term neurotransmitter refers to . group of answer choices a chemical found in the synaptic vesicles that is released into the synapse any one of a number of chemical compounds that increase the activity of the endocrine system the chemical substance found in the cell membrane the dna contained in the nucleus of every neuron

The Oldowoan Industry was one of the first standardized ways that ancient human ancestors produced tools and was used for an extended period of time.

Mainly related to the production of axes and cleavers. The Oldowan tools were created by hominids who lived between 2.6 million and 1.7 million years ago and are linked with the early species of Homo. The name Oldowan was derived from the Olduvai Gorge in Tanzania.

Where a wide range of Oldowan tools were discovered in the early twentieth century. Oldowan tools are the earliest known human-made stone tools to have been discovered, and they were utilized for more than a million years in various locations across Africa.

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Multiple allelic inheritance in humans refers to a situation where a gene has more than two allelic forms. It implies that more than two alleles determine the trait expression, thus resulting in many possible phenotypic outcomes. There are different examples of multiple allelic inheritance in humans, such as ABO blood group inheritance.

The ABO blood group is one of the classic examples of multiple allelic inheritance in humans. The inheritance of blood groups involves three alleles: A, B, and O, where A and B are codominant and O is recessive. The gene responsible for blood group is located on the chromosome 9, and it determines the presence or absence of antigens on the surface of red blood cells.

A person can either be blood group A, B, AB, or O, depending on the combination of alleles inherited from their parents. For instance, a person who inherits the A allele from one parent and the B allele from the other will have the AB blood group.

Another person who inherits the O allele from both parents will have blood group O. Similarly, someone who inherits A allele from both parents will have blood group A, and the same applies to those who inherit the B allele from both parents.

Therefore, in conclusion, the ABO blood group is a classic example of multiple allelic inheritance in humans. It is a type of inheritance where a gene has more than two allelic forms, and it results in many possible phenotypic outcomes.

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Answer:Sun

Explanation:

One example of failed environmental policy is the Kyoto Protocol, an international agreement signed in 1997 with the aim of reducing greenhouse gas emissions to mitigate global warming.

STEP 2: Kyoto Protocol failed to achieve its intended objectives for several reasons. Firstly, agreement did not include the United States, which at the time was world's largest emitter of greenhouse gases, and China, which is now world's largest emitter.

Secondly, some countries that signed agreement failed to comply with emission reduction targets they had agreed to. For instance, Canada withdrew from agreement in 2012 after failing to meet its targets.

Thirdly, even among the countries that adhered to agreement, there was lack of ambition to set more aggressive targets to achieve deeper cuts in greenhouse gas emissions.

Finally, Kyoto Protocol was criticized for not addressing the root cause of climate change, which is the reliance on fossil fuels and the lack of investment in renewable energy sources.

STEP 3: To address the failures of the Kyoto Protocol and to make it more successful, several changes could be implemented. Firstly,  inclusion of all major emitters, such as the United States and China, would be crucial for the effectiveness of any international climate agreement.

Secondly, stronger incentives and penalties could be implemented to encourage countries to adhere to their agreed-upon emission reduction targets.

Thirdly, there needs to be a greater focus on the underlying causes of climate change, such as reducing reliance on fossil fuels and increasing investment in renewable energy sources.

Finally, there needs to be more emphasis on public education and outreach to raise awareness about the importance of reducing emissions .

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Answer:

directly proportional

Explanation:

The density of a liquid is directly proportional to the upthrust.

hope it helps u

sorry, desperate for points.

Answer:

The answer is side chain/group.

Answer:

d

Explanation:

Answer:

Research question: Will the arm spayed with bug  will the bug repellent have less bites than the arms not sprayed?

Hypothesis:​ There'll be less bites on the arm sprayed with bug repellent because the chemicals from the repellent should repel bugs

Hope this helps have a nice day :)

Answer:

Answer B

Explanation:

Plato

The type of crop that accounts for most of the world's genetically modified crops is soybeans. Genetically modified crops are plants whose DNA has been modified using genetic engineering techniques.

They are created to improve their resistance to pests, herbicides, or extreme weather conditions, among other things. The first genetically modified crop to be introduced commercially was the Flavr Savr tomato in 1994.

Since then, the number of genetically modified crops has increased significantly, with soybeans being the most commonly modified crop. Soybeans account for about 50% of the world's total area planted with genetically modified crops.

The United States, Brazil, and Argentina are the three largest soybean-producing countries, and together they account for 80% of global production. About 90% of soybeans grown in the United States are genetically modified.

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During my discussion with my instructor for the 05.07 Movement Discussion-Based Assessment, I contacted my instructor on June 17, 2023. We discussed several topics related to the module.

First, we talked about the westward expansion in the 1800s and its impact on Native Americans and slaves. I shared my understanding of how the westward movement led to the displacement and mistreatment of Native American tribes, as well as the continuation of slavery in newly acquired territories.

Next, we discussed the changes in transportation during this period. I highlighted the significance of the transcontinental railroad in facilitating westward expansion and connecting the east and west coasts of the United States.

We also delved into the Mexican-American War and its role in expanding American territory. I explained how the war resulted in the acquisition of significant land, including present-day California, New Mexico, Arizona, Nevada, and Utah.

In terms of applying what I learned, I provided accurate comments and shared course-specific details during our conversation. I discussed how the lessons on westward expansion and its consequences have broadened my understanding of American history. Additionally, I gave an example of how this information applies to daily life by highlighting the importance of recognizing and addressing the historical injustices faced by marginalized communities.

Regarding my 21st-century skills, I demonstrated commitment by reaching out to my instructor in a timely manner and actively participated in the conversation. I used a proper tone and appropriate speech for my level, ensuring effective communication during the discussion. I also made sure to prepare for the call by reviewing my guided notes thoroughly.

Overall, I believe I met the criteria for an excellent performance in this Discussion-Based Assessment.

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Answer:

Lactic acid is ur answer

Explanation:

Stay safe, stay healthy and blessed.

Have a great day !

Thank you

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The acid present in milk is Lactic Acid

Answer:

C

(experience)

Answer:

C

Explanation:

Three main factors that can change the gene pool of a population are: additional individuals being born, individuals moving out of the area, and mutations.

Here, all the options are correct.

The gene pool of a population is the collective set of genetic information for all of the individuals who make of the population. This pool is continually changing as individuals are consistently interacting with the environment.

Due to the process of reproduction, additional individuals are constantly being born, adding new genetic information to the population as a whole. This new information can be a mixture of genetic traits passed down from the parents or it may be completely new, caused by the mutations during the reproductive process.

Here, all the options are correct.

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Answer:

secondary immune response

Explanation:

Thanks to what we know about muscles and the fibers they contain, we can confirm that the statement in the question is in fact true.

Muscle is a type of tissue which due to coordinated systems that make up their composition, have the ability to contract. This ability allows for greater efficiency. In humans, the muscle systems are classified into three kinds:

Despite the different classifications and functions of each muscle type, each of these muscles contains a combination of three types of muscle fibers, which are the fibers listed in the question:

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Answer: B or A

Explanation:

Genetic tests of humans around the world show that the greatest genetic variation among humans is present in Africa. This is because Humans originated in Africa and then spread around the world in a series of migratory population bottlenecks over the years. The correct answer is: The correct answer is A.

The statement accurately reflects the scientific understanding of human evolution and population history. Africa is widely considered the birthplace of modern humans, with the earliest known fossil evidence of Homo sapiens found in Africa. From there, human populations gradually dispersed and migrated to other regions of the world.

As human populations migrated out of Africa, they encountered various challenges, including geographic barriers, environmental changes, and founder effects, leading to population bottlenecks. A population bottleneck occurs when a small group of individuals becomes isolated from the larger population, resulting in a reduced gene pool and increased genetic drift. These bottlenecks reduced genetic diversity in populations outside of Africa.

In contrast, Africa remained a continuous habitat with a larger and more diverse population, leading to a higher level of genetic variation. The longer history of human presence in Africa, combined with ongoing genetic exchanges and interactions among diverse African populations, has contributed to the observed greater genetic variation in African populations compared to populations in other parts of the world.

Therefore, the greatest genetic variation among humans being present in Africa is primarily attributed to the fact that humans originated in Africa and then underwent a series of migratory population bottlenecks as they spread across the globe.

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The correct question is:

Genetic tests of humans around the world show that the greatest genetic variation among humans is present in Africa. Why is that? Group of answer choices

A) humans originated in Africa and then spread around the world in a series of migratory population bottlenecks over the years,

B) Africa has attracted the most immigration from diverse groups from other continents

C) there has been the most disruptive selection in Africa due to infectious diseases

D) there was mating with Neanderthals and denisovans outside of Africa but not in Africa there is sampling bias in Africa

The environmental input that is necessary for the Calvin cycle reactions is carbon dioxide (CO₂). It is captured and utilized by the enzyme Rubisco to convert carbon dioxide into glucose during the process of photosynthesis.

The Calvin Cycle, also referred to as the dark reaction, C3 cycle, or carbon fixation, is a sequence of enzyme-assisted reactions that occur in the stroma of chloroplasts in photosynthetic organisms. The Calvin cycle is responsible for transforming carbon dioxide (CO₂) into a high-energy molecule, which is used to produce glucose. This procedure occurs in three stages: carbon fixation, reduction, and regeneration. Environmental input for Calvin CycleIn the Calvin cycle, carbon dioxide is required as an environmental input.

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(7) a fossil that preserves the original shape of an organism in sediment is called a mold fossil, (8) Figure 3 represents a brachiopod, and (9) Fossils are primarily identified based on changes in their morphology. The correct answers are 7. C, 8. C, and 9. A.

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The correct question would be as

(7) What type of fossil forms when a buried organism decays or is dissolved, but the original shape is preserved in the sediment? (a) body fossil (b) trace fossil (c) mold fossil (d) cast fossil (8) Which of the following is a brachiopod? (a) Figure 1 (b) Figure 2 (c) Figure 3 (d) Figure 4 (9) Fossils are most often identified based on changes in their which is easily recognizable, even in the field (a) morphology (b) DNA (c) domain (d) lifestyle

The Koala (Phascolarctos cinereus) is a native species of Australia that belongs to the marsupial family Phascolarctidae. Koalas are known for their distinctive appearance, including their large ears, round faces, and fluffy, gray-brown fur.

Koalas have a specialized niche in their ecosystem, as they are highly specialized herbivores that feed exclusively on eucalyptus leaves. They have a long, sticky tongue that allows them to extract nutrients from the leaves, and they have a unique digestive system that is able to process the toxic compounds found in eucalyptus leaves.

The Koala's niche has a significant impact on the ecosystem. Eucalyptus leaves are an important food source for many other animals, including birds and insects, so the Koala's feeding habits help to maintain a balance in the ecosystem.

Additionally, Koalas play a role in seed dispersal, as they often defecate the seeds from eucalyptus leaves in their feces, which helps to spread the seeds and promote new growth.

Overall, the Koala's niche as a specialized herbivore that feeds on eucalyptus leaves is important for maintaining the health and balance of their ecosystem, and it helps to support the survival of many other species in the region.

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Answer:

A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals called mutagens, or infection by viruses.

Explanation:

A mutation is a change in a DNA sequence

The flowering plants are another name for angiosperms. The root system and the shoot system are the two parts of these plants.

Angiosperms are plants that blossom and produce fruits that contain their seeds. They are the most numerous and varied subgroup of the kingdom Plantae.

In angiosperms, stamens are present. The reproductive organs in flowers called stamens are responsible for producing the pollen grains that contain the genetic material for males.

Angiosperms are sometimes known as flowering plants. These plants are composed of two parts: the root system and the shoot system.

Wind, insects, and other animals all contribute to pollination. The pollen grain is the male component, and the ovary is the female component.

Thus, these are the structures present in angiosperm.

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Therefore, a genotype only provides a condensed list of the alleles that an organism possesses for any number of genes. For instance, the genetic makeup of our unknown parent is uppercase. letter d minuscule d small f.

Take those straightforward strategies to respond to inquiries which ask about the genetics for the parents: Write down the distinctive characteristics of both parents; then, depending on these characteristics, write up what you are aware of their phenotypes (keep in mind that an expressed hereditary feature implies recessive homozygous condition); finally last, search for recessive.

Immaculate dominant (PP), heterozygous (Pp), and immaculate (pp) are each of these genotypes. The Laws of Inheritance and the Mendel's Experiments are some related readings.

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Answer:

B. Smooth muscle that lines the stomach

Explanation:

The muscle tissue is the only tissue of the options given.

An example of a tissue in the digestive system - B. Smooth muscle that lines the stomach as it is only tissue in given choices.

In digestive system stomach, pancreas and intestine all work together, all three are organs that are made up of tissue level organization that perform similar functions.

Thus, the correct answer is - B. Smooth muscle that lines the stomach.

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Answer: hat is much needed to keep birds insulated and provides the energy stores needed to survive

Explanation:

When a cell prepares to divide, the chromosomes become more tightly compacted. This process decreases the apparent length of the chromosomes and increases their diameter.

When a cell gets ready to divide, it must duplicate each chromosome. Sister chromatids are the name given to chromosomes that have two copies. The sister chromatids are joined together by cohesion-containing proteins and are similar to one another. At the centromere, a section of the DNA that is crucial for their separation during later stages of cell division, the bond between sister chromatids is strongest. The sister chromatids are still regarded as one chromosome as long as they are joined at the centromere. The moment they are separated during cell division, though, each chromosome is regarded as a separate one. The cell cycle is an organised sequence of cell growth and division events that results in the creation of two new daughter cells. In order to form two identical (clone) cells, cells go through a sequence of carefully controlled and regulated steps of growth, DNA replication, and division. Interphase and the mitotic phase are the two main stages of the cell cycle.

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Slime molds are thought to be the closest relatives of fungi. Both groups of organisms are members of the kingdom Protista, which includes single-celled eukaryotes that lack a cell wall.

Slime molds and fungi are similar in that they both have a mycelium, a network of branched, thread-like cells. Both groups of organisms are also heterotrophs, meaning that they cannot produce their own food and must obtain nutrients from other sources.

Slime molds typically live in moist environments, while fungi are found in a wide range of habitats. Slime molds are often brightly colored, while fungi are typically white or brown. Finally, slime molds typically reproduce asexually, while fungi can reproduce sexually or asexually.

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A) Slime molds

B) Brown algae

C) Animals

D) Mosses

E) Vascular plants

1.1. Graph to illustrate the market for tomatoes before the unusually cold January and in the same graph show how the events in the news clip influence the market for tomatoes

Here, the price is $6.50 and the quantity supplied is 5 million pounds per week. The equilibrium is at the intersection of the supply and demand curve at point E.

Now, the events of the news clip influence the market for tomatoes, causing a decrease in supply due to the destruction of entire fields of tomatoes, resulting in a shift of the supply curve from S1 to S2.

The new equilibrium is at point F where the price has increased to $30 and the quantity demanded and supplied have decreased to 1.25 million pounds per week.

1.2. In April 2014, the money price of a carton of milk was $2.01 and the money price of a gallon of gasoline was $3.63.

To calculate the relative price of a gallon of gasoline in terms of milk, we use the formula:

Relative price = Price of gasoline / Price of milk

Relative price = $3.63 / $2.01 = 1.81

Therefore, the relative price of a gallon of gasoline in terms of milk is 1.81.

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Answer:

In agriculture specialization, farmers produce one crop instead of so many crops. In other words, the farmers, adopt specialized farming. By doing so they avail all those benefits which are accrued to the big businesses. Hence the goods are produced on a large scale.