Mitochondrial DNA can be taken from bone, hair, or teeth and used in DNA typing. What are the benefits to using mitochondrial DNA over nuclear DNA? mtDNA requires a much smaller sample than nuclear DNA. mtDNA is useful if the nuclear DNA is degraded. mtDNA is inherited from the mother and father’s egg cells, unlike nuclear DNA. mtDNA is present in all maternal relatives of the person being investigated.

1) D. subduction

2) D. provide evidence for seafloor spreading

I took it too lol

Seafloor spreading is the process of splitting apart of tectonic plate

The process illustrated by the area labeled G in figure 9–1 is subduction

D. Subduction

Strips of alternating magnetic polarities is found in rocks in the ocean basins;

D. Provide evidence for sea floor spreading

Reason:

Subduction is a process in geology that occur where two plates converge

(usually ocean ocean plate convergence or oceanic continental

convergence) such that lithosphere of one plate is subducted or dives

beneath a less dense plate into the mantle, where it is recycled

The observations of the strips located on the ocean floor are as follows;

The above observation are an evidence of seafloor spreading

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No, it is not possible to have thunder without lightning. Thunder is a direct result of lightning.

So the answer is False

I hope this useful

No, it is not possible to have thunder without lightning. ... A typical cloud-to-ground flash lowers a path of negative electricity (that we cannot see) ... one-millionth of a second - so the human eye doesn't see the actual formation of the stroke.

The answer is respiration.

B. Bacteria would be your answer

Bacteria are the organisms that convert nitrogen into a form usable by humans. They do this through processes called nitrification and nitrogen fixation. These bacteria often live in symbiosis with plants, aiding their survival while also benefiting the soil.

The organisms that convert nitrogen into a form that is usable by humans are bacteria. Processes like nitrification and nitrogen fixation are key in this conversion. Nitrification involves bacteria converting nitrates (NO₃⁻) to nitrites (NO₂). Nitrogen-fixing bacteria convert nitrogen gas (N₂) into organic compounds which plants and animals can use.

These microorganisms often live in a symbiotic relationship with plants. A good example of this are bacteria of the genus Rhizobium, which live in the root nodules of legume plants such as clover, alfalfa, and peas. The nitrogen converted by these bacteria can be used by these plants to form essential compounds, supporting their survival while also enriching the soil.

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Bryophytes and non-vascular.

hope it helps!

Mosses are a phylum of non-vascular plants. They produce spores for reproduction instead of seeds and don't grow flowers, wood or true roots.

hope this helps

Seeds are not the reproductive structures of plants. Seeds are the product of reproduction.

Seeds are not the reproductive structures of plants. Seeds are the product of reproduction.

In flowering plants Reproduction can occur both asexually and sexually, these flowering plants or angiosperms primarily do  sexual mode of reproduction.

Flower is the major organ where Reproduction occur  in which  both male and the female gametes are present and various other parts of flower involve in the process of reproduction.

There are four important steps in the reproduction such as Pollination, Gametogenesis, Fertilization

The flower is a specialized structure where reproductive parts are located  which contain the male and female reproductive organs which facilitate fertilization.

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your answer is C. cleavage, fracture

cleavage the way minerals breaks apart, split easily along a flat surface,

fracture the way minerals break apart, breaks in an irregular way

The way that a mineral breaks can help to identify that mineral. Some minerals have a tendency to split evenly along specific or straight planes, this is called cleavage; other minerals break in more of an irregular pattern is called as fracture.

Answer: Option C

Explanation:

Cleavage refers to the manner in which a few minerals break along specific lines of shortcoming in their structure. Mica is a best example as it breaks along firmly divided level planes that yield slim sheets.

Calcite is another genuine model, breaking along three distinct planes that yield blocky pieces that resemble a rectangular box that has been twisted.  On the other hand, fracture is the propensity of a mineral to break along bended surfaces that don't have planes and break in a irregular pattern.

The energy in a polysaccharide is stored in the high energy carbon-hydrogen covalent bonds within the monomers. The breaking of these bonds is what is responsible for releasing energy used to generate ATP.

THE ANSWER IS: C

The alligators in the mangrove forest will receive a portion of the 500,000,000 pounds of biomass produced by the phytoplankton in the food web.

To determine how much biomass the alligators in the mangrove forest will receive, we need to follow the energy flow in the food web. Phytoplankton, as primary producers, produce 500,000,000 pounds of biomass. The energy from the phytoplankton is then passed on to primary consumers, secondary consumers, and so on. As apex predators, the alligators will receive the biomass from all the trophic levels below them. The exact amount will depend on factors such as energy transfer efficiency between trophic levels, but the alligators will receive a portion of the 500,000,000 pounds of biomass.

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A glacier's weight, combined with its gradual movement, can drastically reshape the landscape over hundreds or even thousands of years. The ice erodes the land surface and carries the broken rocks and soil debris far from their original places, resulting in some interesting glacial land forms.

Hi there, Phosphorus works with calcium to help build bones but not only it helps the bones it also helps with the cells and DNA so your answer to this will be D. All of the above. Since it plays an important role in the body it'll make sense for the phosphorus to work with calcium to help with the bones, cells and DNA.

Hope this helped :)

Have a great day

Phosphorus is an element that plays a major role in various body activities. It is found in the bones, cell membrane, and DNA. Thus, option d is correct.

Phosphorus is an element that has a major role in many activities and functions in the body. They are present in the bones along with the calcium to build and grow. It is also present in the cell membrane in the form of phospholipids.

They are present in the DNA as the structural element that makes the backbone of the nucleic acid. They are essential and have many structural and functional roles in the body.

Therefore, phosphorus is found in the cell membrane, bones, and DNA.

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The answer is B. Natural Gas.

Answer: Oil

Explanation:

The united states is the leading producer of the crude oil and gas and holds more coal reserves as compared to the other countries.

The crude oil production is accounted to be largest in the United States which accounts for more than 10.9 million barrels per day.

This is a huge number which is not been expected from any of the other countries. The United states is the leading country when it comes to fossil fuels.

Final answer:

Within a water molecule, atoms are held together by covalent bonds, where the oxygen and hydrogen atoms share electrons. This bond is crucial for the molecule's structure, distinguishing it from hydrogen bonds, which form between different water molecules.

Explanation:

The type of chemical bond that holds the atoms together within a molecule of water is the covalent bond. Covalent bonds are a form of chemical bond where atoms share electrons to achieve a more stable electron configuration. In a water molecule, this bond occurs between the oxygen atom and each hydrogen atom. The shared electrons spend more time closer to the oxygen atom due to its higher electronegativity, creating a partial negative charge near the oxygen and a partial positive charge near the hydrogen atoms. This uneven distribution of charge within the molecule contributes to the formation of hydrogen bonds between adjacent water molecules, but it is important to distinguish that the covalent bond is what holds the atoms together within a single water molecule, while hydrogen bonds are intermolecular forces that occur between water molecules.

The specific type of chemical bond that holds the atoms together within a molecule of water is a covalent bond.

In a water molecule (H₂O), there are two covalent bonds formed between the oxygen (O) atom and the two hydrogen (H) atoms. Covalent bonds involve the sharing of electrons between atoms to achieve a more stable electron configuration. In the case of water, oxygen has six electrons in its outer shell and needs two more to complete its octet. Each hydrogen contributes one electron, forming a shared pair of electrons with the oxygen atom. The sharing of electrons in covalent bonds allows each atom to attain a more stable state by filling its outer electron shell. In water, this results in a bent or V-shaped molecular geometry. It's important to note that the electrons are not transferred from one atom to another, as in ionic bonds, but are shared between the atoms. The strength of covalent bonds is determined by the sharing of electrons, with single, double, or triple bonds representing different levels of electron sharing.

In summary, within a molecule of water, the atoms (oxygen and hydrogen) are held together by covalent bonds, where electrons are shared to achieve a more stable configuration for each atom.

QUESTION

What specific type of chemical bond is responsible for holding the atoms together within a molecule of water?

Enzymes are very sensitive to temperature and pH.

An enzyme will not function well or at all if it is at the wrong temperature or pH level.  However, there is no set range for all enzymes; every enzyme is different and has their own range.  For example, the pH levels under which stomach enzymes work best would be vastly different from the pH levels under which intestinal enzymes work.

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Final answer:

Sweden has a higher percentage of secular individuals compared to the United States, which can impact the political and economic climate.

Explanation:

Sweden has a higher percentage of secular individuals compared to the United States. According to a 2009 Gallup survey, only 17 percent of adults in Sweden considered religion to be an important part of their daily lives, while the number was higher in the United States at 65 percent. This difference in religious beliefs can have an impact on the political and economic climate of the two countries.

1. A

2. B

3. A

I am pretty sure this is correct

The two processes that are most responsible for the decrease in the height of the Appalachian Mountains include weathering and erosion.

The statement that explains why earthquakes occur more frequently in California than in Massachusetts is due to the fact that California is located on the boundary of two crustal plates, but Massachusetts is not.

The feature that forms when an oceanic plate has been moving over a hot spot for millions of years is that volcanoes form as lava erupts through the oceanic plate.

It should be noted that erosion and weathering reduce the height of rocks and this can lead to a decrease in the height of the Appalachian Mountains.

In conclusion, the correct options are A, B, and A.

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An array of hydrophones is more useful than a single hydrophone for localization of sound, noise reduction, and beamforming.

An array, or group, of hydrophones is more useful than a single hydrophone for several reasons:

Overall, an array of hydrophones allows for more accurate and detailed sound recording and analysis compared to a single hydrophone.

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Hydrophone arrays are preferable to single hydrophones due to their ability to create beam patterns, focus energy on specific areas, and listen in more than one direction, thus enhancing acoustic detection capabilities and improving scientific research quality.

An array or group of hydrophones is more useful than a single hydrophone because arrays allow for distinguishing sound signals with greater specificity and for the formation of beam patterns that can enhance directional sensitivity. For example, the US Navy's Sound Surveillance System (SOSUS) implemented hydrophone arrays to detect submarine noises but also found applications in tracking whale sounds and identifying sub-sea volcanic eruptions. The ability to focus energy on desired spots or to listen in multiple directions simultaneously is a significant advantage of using hydrophone arrays.

Radar systems use similar principles with phased arrays to create high-resolution imaging through synthetic aperture radar (SAR), which, by moving a small receiving antenna, can synthesize a larger phased array antenna's angular resolution. Additionally, for scientific research, such as the understanding of oyster reef life, the use of hydrophone arrays can provide focused listening that cultivates empathy and deepens scientific knowledge. Acoustic array microphones have directional patterns that can sharply direct and pick up faraway sounds, showing the practicality of using arrays for acoustic detection and research.

Answer:

Scientific Evidence and theories:"In the field of sciences each aspect relating to matter and energy or any other entity is measured, tested, and then experimentation is done on it as according to the standards.The measured entity is compared with the standards provided."

In each era there are different level of advancements been made by the researchers, as these new evidences and theories are presented in order to enhance our ability to understand this universe from a whole different perspective. This leads us to creating new theories and if they survive luckily,than they might even become a Law.

Explanation:

Answer:- The three forms of nitrogen in an aquarium are

1. Nitrate NO3-

2Nitrite NO2-

3. Ammonia NH3

Explanation:

Thus, in this nitrogen cycle we can see that there are three different forms in which nitrogen is present- ammonia, nitrate and nitrite.

Arrows in food chains are drawn from prey to predator to illustrate the transfer of energy in an ecosystem. They represent the energy flow from the producer to consumers, including predators. Furthermore, some species employ a strategy known as Batesian mimicry to deter predation.

In food chains or food webs, arrows are drawn from prey to predator to represent the transfer of energy. Organisms acquire energy by consuming other organisms. For instance, a rabbit (the prey) munches on grass, and then it is eaten by a hawk (the predator).

This follows the rule of energy flow in ecosystems, where energy travels from the producer (like plants) to various levels of consumers (animals, including predators).

An interesting part of this energy flow is seen in species that imitate harmful organisms to deter predators, a phenomenon known as Batesian mimicry. For example, some insect species can mimic the coloration of bees or wasps to discourage predation, even though they may not be harmful or toxic themselves.

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Hurricanes have the ability to produce large waves due to the combined effects of strong winds and low atmospheric pressure.

The first key factor is the strong winds associated with hurricanes. These rotating winds can reach extremely high speeds, often exceeding 100 miles per hour. As these powerful winds blow across the surface of the ocean, they create frictional forces with the water.

The second factor is the fetch, which refers to the distance over which the wind blows uninterrupted across the ocean surface. Hurricanes, with their large size and slow movement, allow the winds to act over a considerable fetch, sometimes spanning hundreds of miles.

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Cladograms are concerned with the way organisms are related to common ancestors through shared characteristics.

Phylogenetic trees compare organisms over evolutionary time and the amount of change that has occurred over time to figure out the relationships.

The species or groups of interest are located at the ends of lines known as the tree's branches in a phylogenetic tree.

As an illustration, the phylogenetic tree below depicts relationships between five species that are located at the endpoints of the branches, A, B, C, D, and E.

Therefore, Cladograms are concerned with the way organisms are related to common ancestors through shared characteristics.

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D = M / V

density = mass / volume

/ = divide

Ans.

The Che proteins (chemotaxis proteins) are cytoplasmic proteins that play an important role in signal transduction pathways between the repellent or attractant and flagellar motor switch of a bacterium. Bacterial cell membranes contain different chemoreceptors for different attractants and repellents.

When a repellent or attractant binds with a chemoreceptor, stimulation of signal-transduction pathway occurs.  It sends a signal to the cytoplasmic domain of receptor, which interacts with Che proteins, present at cytoplasm. The rate of auto-phosphorylation decreases when an attractant binds with receptor, while the rate of auto-phosphorylation increases when an attractant binds with receptor.

Thus, 'the attractant enhances smooth swimming and counterclockwise rotation towards the chemical source, which repellent enhances tumbling clockwise rotation away from a chemical source.'  

the study of living organisms is called biology .

Cell Membrane Semi-permeable membrane made of phospholipids that acts as a barrier between inside and outside of the cell.

Cytoplasm The fluid, cytoskeleton, and organelles inside a cell.

Nucleus Contains DNA and control's the cell's activity.

Cell organelles that have their functions listed correctly are as follows:

"Chloroplast, Cytoplasm, Vacuole Mitochondria, Cell membrane and Cell wall"

1.Chloroplasts:

Chloroplasts are plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process.

2. Cytoplasm:

Cytoplasmic organelles are "little organs" that are suspended in the cytoplasm of the cell.

3. Vacuole:

In plant cells, vacuoles help maintain water balance.

4. Nucleus:

It controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes.

5. Nuclear membrane:

It serves to separate the chromosomes from the rest of the cell.

6. Mitochondria:

It is involved primarily in cell respiration and energy production.

7. Cell membrane:

It provides protection for a cell.

8. Cell wall:

It provides structural strength and support, and also provide a semi-permeable surface for molecules to pass in and out of the cell.

So, in the given table the organelle that represents correct functions are:

"Chloroplast, Cytoplasm, Vacuole Mitochondria, Cell membrane and Cell wall".

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Explanation:

Nitrogen breaks down the oxygen at high temperatures

The structure of DNA is double helix which looks like twisted ladder. The sides of the DNA molecule, the rails of the ladder are composed of alternate phosphate and sugar molecules.