the first inhabitants of the americas hunted a vast array of huge mammals like mammoths and giant bison, otherwise known as .

Answer:

The geosphere is made up of rock, sediment, soil, lava, and magma.

Explanation:

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The Royal Air Force's counterattack to intercept German planes was called the Battle of Britain. This was a significant battle fought during World War II (WWII) between the United Kingdom and Germany on the airfields of England.

The British Royal Air Force (RAF) and German Luftwaffe air forces battled from July 10 to October 31, 1940. The Battle of Britain was significant because it was the first campaign ever fought entirely by air forces.The British were able to win the Battle of Britain and prevent the German invasion through the strength of their air force.

While the Germans had many more planes and pilots than the British, they were not able to match the British when it came to technology and training. The Germans had to halt their plans to invade Britain after losing the battle.

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Answer:

Your body breaks down your food into nutrients which is why it takes hours to fully digest food.The human body breaks down the

Food into Einto amino acids, starches into simple sugars, and fats into fatty acids and glycerol.

In terms of cell division, there are many similarities between plant and animal cells. However, there is one event that occurs by a different mechanism in plant and animal cells.

The event in question is the separation of the cell into two daughter cells. In animal cells, this process is achieved by the constriction of the cell membrane, which eventually leads to the formation of two separate daughter cells. In contrast, plant cells have a cell wall that prevents them from undergoing this type of constriction. Instead, during plant cell division, a new cell plate forms between the two nuclei, which eventually leads to the formation of two separate daughter cells.

While this process of cell plate formation is unique to plant cells, other events such as the alignment of chromosomes in the center of the cell and the separation of sister chromatids occur by similar mechanisms in both animal and plant cells.

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EEG patterns brain waves that are most pronounced and have the lowest frequency.

Stage IV sleep, the deepest level of sleep, is characterized by low frequency (1-4 Hz), high amplitude oscillations known as delta waves, the recognizable slow waves after which this stage of sleep is named. The complete process of transitioning from tiredness to deep stage IV sleep often takes an hour.

The amplitude and frequency of alpha brainwaves are higher. From 9 to 14 cycles per second, they oscillate. A person in an alpha state is frequently one who has finished a task and is taking a break. A person who stops to contemplate or practice meditation.

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Answer:

when a body covers equal distance in equal interval of time with a known direction, small the interval may be then velocity is said to be uniform velocity.

when an object covers unequal distance in a specified direction is said to be non-uniform velocity.

It produce zero acceleration as acceleration is defined as the rate of change of velocity per unit time. So, if the body exhibit uniform velocity,then the rate of change of velocity (dv=0) will be zero.

Explanation:

This answer may help u .

Photosynthesis uses raw materials for converting radiant energy into a more usable form. The usable form of energy produced by this process is Glucose, a form of chemical energy.

Photosynthesis is the process of making food by converting carbon dioxide and water into carbohydrates, using radiant energy from sunlight. During photosynthesis, radiant energy is converted into a more usable form of energy by using raw materials such as water and carbon dioxide. Photosynthesis is an important process because it provides oxygen and carbohydrates.

During photosynthesis, the radiant energy is trapped in the chloroplasts and stored as chemical energy in the form of glucose or other carbohydrates, which can be used later by plants for various metabolic processes.

The usable form of energy produced by photosynthesis is Glucose. It is a simple sugar that provides energy to the cells. Glucose is produced by photosynthesis by combining carbon dioxide and water. Glucose is a carbohydrate and is one of the most important sources of energy for living organisms. The glucose produced by photosynthesis is used by plants to provide energy for their own metabolic processes, while the excess glucose is stored as starch, which can be used later when needed.

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1. abortion

2. testing cosmetic products on animals

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Hydrogen bonds, type of chemical bond exists between two water molecules.

A chemical bond is what binds atoms in molecules together. Electrical forces between positive charge atomic nuclei and negative-charged electrons form bonds. A chemical bond is a long-lasting attraction between ions or atoms that allows molecules and crystals to form.

Hydrogen bonds arise between neighboring water molecules' hydrogen and oxygen atoms. A hydrogen bond is formed by the attraction of individual water molecules. A water molecule is made up of two hydrogen and oxygen atoms atom, with one partly positive hydrogen atom connected to a more highly electronegative atom.

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Your question is incomplete, but most probably the full question was.

Answer:

Algae, Protozoa, Heterotrophs

Explanation:

Explanation:

plants doesn't need oxygen to release the energy in the food that they make.

it's the same oxygen we breath.

the answer is false

Answer:

3420

Explanation:

each kg is 1,000 grams so 3.42x1000 is 3420

Carbon is stored on our planet in the following major sinks :

(1) as organic molecules in living and dead organisms found in the biosphere.

(2) as the gas carbon dioxide in the atmosphere.

(3) as organic matter in soils.

(4) in the lithosphere as fossil fuels and sedimentary rock deposits such as limestone dolomite and chalk.

(5) in the oceans as dissolved atmospheric carbon dioxide and as calcium carbonate shells in marine organisms.

The statement  "The genetic code is degenerate, meaning that a codon can specify more than one amino acid" is  false because in the genetic code, a codon can specify only one amino acid.

In the genetic code, a codon, which is a sequence of three nucleotides, specifies a single amino acid. However, the degeneracy of the genetic code refers to the fact that multiple codons can code for the same amino acid. This means that one amino acid can be coded by more than one codon, providing redundancy and flexibility in the genetic code. And a single codon can only ever specify one amino acid. Hence this is a false statement.

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Answer:

The law of conservation of mass states that the total amount of mass remains constant in a system. In ecology, this means that when an organism is eaten, its mass is conserved. Some of the organism’s mass is used to make new proteins, and some of it is passed as waste in the form of urine or feces.

Explanation:

Answer:

The law of conservation of mass states that the total amount of mass remains constant in a system. In ecology, this means that when an organism is eaten, its mass is conserved. Some of the organism’s mass is used to make new proteins, and some of it is passed as waste in the form of urine or feces.

Explanation:

Answer:

they can be grown on land that would not be used for traditional agricultural, and are very efficient at removing nutrients from water.

Explanation:

Answer:

The correct answer is: ATP is a nucleic acid.

Explanation:

ATP, abbreviated from adenosine triphosphate, is a nucleic acid that has only one nucleotide and, instead of having only one phosphate like DNA and RNA have, has three phosphates attached to its sugar. Having three phosphates is very important for its function as an energy storer and tranferer, because when the phosphoanhydride bond between two of its phosphates breaks there's a rapid energy release that can be used by the cell in many different ways (for example, muscle contraction).

Answer:

D. The shape and structure of the beak are inherited and help the pelican survive in its environment

Explanation:

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The transcription activators are the ones responsible for the control of transcription in the case of eukaryotes as they recruit deacetylases or histone acetylases by the transcriptional repressors to prevent or allow the access to the transcriptional machinery.

The transcriptional control in the eukaryotes are done by the transcriptional activators which are certain proteins or the transcription factors that can increase or decrease the transcription of a gene or set of genes. This is done at the initiation step.

Activators are usually considered to have a positive control over the gene expression, as their primary function is to promote the gene transcription and, in some cases, they are required so that the transcription of genes can occur. Transcriptional activators are able to recruit histone acetylases in order to initiate transcription and repressors are able to recruit deacetylases to prevent the access of the transcriptional machinery to the DNA.

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The main dietary component in the growth of dental decay caries is free sugars. When oral bacteria break down glucose to create acid, which demineralizes the hard structures of the teeth, dental caries is created (enamel and dentine).

As part of its metabolism, the anaerobic bacteria S. mutans is known to create lactic acid. Second, S. mutans can adhere to tooth surfaces when there is sucrose present because it produces glucans, a polymer that helps to attach the bacteria to the tooth. Dental decay is caused by acids produced by bacteria that digest sucrose and other dietary carbohydrates, which dissolve tooth mineral, chiefly hydroxyapatite, Ca10 (P04)6(0H)2. These microorganisms are found in dental decay plaque, a buildup of bacteria on the tooth's surface.

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The two methods commonly used to produce mutations in a forward genetics approach are chemical mutagenesis and transposon mutagenesis.

Chemical mutagenesis involves exposing organisms to mutagenic agents such as ethyl methanesulfonate (EMS) or N-ethyl-N-nitrosourea (ENU) which induce random mutations in the DNA sequence.

Transposon mutagenesis involves the insertion of transposable elements into the genome which can disrupt gene function and lead to mutations.

In both methods, the mutated organisms are screened for phenotypic changes that may indicate a genetic alteration.

In conclusion, chemical mutagenesis and transposon mutagenesis are two effective methods to produce mutations in a forward genetics approach.

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Answer:

C

Explanation:

Mined materials are used for different purposes

Mining is the process of removing valuable materials from the Earth's surface, including the oceans, hence option C is correct.

Extraction of useful materials from the ground is known as mining.  A few notable exceptions, a mineral is an inorganic substance found in nature that has a unique chemical composition, physical characteristics, or molecular structure.

Mined materials include coal, gemstones, and iron ore, to name a few. The raw substance used to make iron is called iron ore. Mining has existed since the primordial era.

In essence, it is the procedure used to extract valuable information from large amounts of data or data warehouses.

It is clear that the phrase itself is a little ambiguous. Coal or diamonds are the end product of the extraction process in the instance of mining for coal or diamonds.

Therefore, humans mine materials for different purpose.

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Bacteria such as E.coli and Salmonella produce Invasins bind to host cells and trigger ruffling of their plasma membrane ruffling thus prompting the cells to engulf the bacteria.

C is the correct answer.

Invasin facilitates bacterial entry into intestinal M-cells and the lymphatic system by attaching to a subset of beta1 integrin receptors on the apical membrane.

The majority of invasive proteins are enzymes that cause immediate pathogen growth and dissemination while also acting locally to harm host cells. This invasive activity's harm to the host could eventually be included into the pathogenesis of an infectious disease.

Therefore, the process at play is as follows: After being boosted by the interaction with Grb2-SH2 via Y169, Rac2 joins forces with PLD to promote actin polymerization, which leads to the development of membrane ruffles.

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The complete question is:

Bacteria such as E.coli and Salmonella produce Invasins bind to host cells and trigger ruffling of their plasma membrane ruffling thus prompting the cells to:

A.  release cytokines

B. produce iron-binding proteins

C. engulf the bacteria

D. destroy the bacteria

E. release tnf

Answer:

The idea of natural selection is that traits that can be passed down allow organisms to adapt to the environment better than other organisms of the same species.

D

Explanation:

kidneys are used to filter blood..... removal of water, urea and excess salts

The role of the liver in waste removal is to filter urea out of the blood and into the bladder. Thus, option A is correct.

The liver is a very important organ of human body and the weight of liver is 1.5 kg and width of liver is 15 cm. The colour of liver is reddish - brown.

The main functions of liver are it carries out the function of protein's metabolism and it excretes bile and it is also responsible for excreting cholesterol, hormones, bilirubin and drugs.

The liver also stores vitamins, glycogen, and minerals so it the center of storage also.

As liver is a very important organ so to maintain it's health a person have to maintain a healthy weight, take a balanced diet, regular exercise, avoiding toxins, and  less use of alcohol leads to keep the liver safe and healthy.

Therefore, the role of the liver in waste removal is to filter urea out of the blood and into the bladder. Thus, option A is correct.

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Answer:

\(to \: store \: the \: genetic \\ \: code \: that \: determines \: \\ an \:

organism's \: traits\)

Answer:

D.

Explanation:

The primary purpose of the chromosomes in a cell's nucleus is to store the genetic code that determines an organism's traits. Therefore, the correct answer is d.

Explanation:

eyespot, also called stigma, a heavily pigmented region in certain one-celled organisms that apparently functions in light reception. The term is also applied to certain light-sensitive cells in the epidermis (skin) of some invertebrate animals (e.g., worms, starfishes). Euglena anatomy.

The eye spot of euglena is to detect the intensity of light.

Euglena is a protist that possesses the characteristics of plant and animal. It is a unicellular and microscopic organism.

Euglena possesses certain structures that serve different purposes in the cell. They include:

Therefore, the eye spot as a structure is used to detect the intensity of light.

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An infant has learned to use a baby spoon and now picks up a regular metal spoon. Her initial attempt to grasp the spoon is clumsy and reflects the process of assimilation. She makes subtle adjustments to her grasping movements, which reflects the process of accommodation.

Learning to use a spoon is just as vital as learning to self-feed with your fingers. It's a developmental milestone that children reach shortly after finishing the first year and master by the age of two. Children could prefer using their fingers because they receive safe-feeling input through their skin, muscles, and joints. With a spoon, the mouth, lips, and tongue are largely used for feedback.

She begins by using established frameworks to explain the experience of taking up the spoon (assimilation). Then, she can adjust her current plans to match the experience of using a new spoon (accommodation.)

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