Answer the question please

D.

Most mountains on Earth are formed at convergent plate boundaries

Explanation:

At the convergent boundary, the denser plate (usually an oceanic plate) gets subsided under the less dense plate (usually the continental plate). The stress in the boundary from the colliding tectonic plates causes fissures to develop along the boundary, in the overlying plate. As the denser plate ‘dives’ into the mantle, it melts and this magma rises, with pressure, along the fissures, and explodes violently on the surface forming volcanic arc geographical features.

An example f such a region is the Ring of Fire  that is home to mountain ranges like the Andes in South America,  Southern Alps of New Zealand, and the Cascade Range of North America.

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Most mountains on Earth are formed at convergent plate boundaries. The correct option is D, at convergent plate boundaries.

Convergent plate boundaries occur when two tectonic plates collide or move toward each other.

There are three main types of convergent plate boundaries:

Therefore, the correct option is D.

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Light-colored lizards in New Mexico's white sands region likely have evolved camouflage coloration to avoid predators, a process driven by natural selection that favors lizards whose coloration blends into their environment.

The presence of light-colored lizards in the white sands region of New Mexico while darker lizards populate surrounding areas can likely be explained through the concept of camouflage as an adaptive feature for survival. These lizards have likely evolved coloration that allows them to blend into their specific environments to avoid predation. In regions with white sands, lighter coloration makes the lizards less visible to predators, enhancing their chances of survival. On the other hand, darker lizards in areas with darker soils and rocks would similarly benefit from a coloration that blends in with their surroundings, as their coloration also acts as camouflage. This adaptation process is driven by natural selection, where individuals that are better able to avoid predators because of their coloration are more likely to survive and reproduce.

Answer:

Activities like cell division, photosynthesis, active transport, transmission of nerve impulses etc. needs energy.

Explanation:

Answer:

The organ is responsible for secreting the parathyroid hormone to get the body back to homeostasis is parathyroid glands .

Explanation:

These parathyroid glands that are  responsible for secreting the parathyroid hormones are smaller glands that are situated in the front of the neck. This parathyroid hormone is vital for maintaining and controlling the levels of calcium in the our body. This parathyroid glands some times secretes too high or too low hormone leading to hyperthyroidism and hypothyroidism. The hyperthyroidism is a state when large amount of hormone is secreted than required. Conversely hypothyroidism, occurs when the less amount of hormone is released.

The parathyroid glands are responsible for secreting the parathyroid hormone (PTH) to get the body back to homeostasis by increasing blood calcium concentrations.

The organ responsible for secreting the parathyroid hormone (PTH) to get the body back to homeostasis is the parathyroid glands. The parathyroid glands produce and secrete PTH in response to low blood calcium levels. PTH increases blood calcium concentrations through various mechanisms, including enhancing reabsorption of calcium by the kidneys, stimulating osteoclast activity, and stimulating the production of calcitriol to enhance absorption of dietary calcium by the intestines.

Bones: PTH stimulates the release of calcium from bones, where it is stored. This process, called bone resorption, increases the amount of calcium in the bloodstream.

Kidneys: PTH promotes the reabsorption of calcium from the urine back into the bloodstream. It also decreases the reabsorption of phosphate in the kidneys, indirectly increasing calcium levels.

Intestines: PTH indirectly enhances the absorption of calcium from the intestines, primarily through its effects on vitamin D metabolism.

By orchestrating these actions, PTH helps to regulate blood calcium concentrations, which is crucial for various physiological functions, including muscle function, nerve signaling, blood clotting, and bone health. This demonstrates the importance of the parathyroid glands and PTH in maintaining calcium homeostasis in the body.

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Answer:

Armadillo is the barrel-shaped animal that lives mostly in hot and warm areas like: rain forests, grasslands, and semi-deserts.

Explanation:

Final answer:

A population's dependence on an abiotic factor is illustrated by how non-living environmental elements like temperature and water influence the living organisms of an area. Ecologists use tools like demography to understand population dynamics and the balance of ecosystems. Abiotic factors are central to defining the characteristics and inhabitants of a biome.

Explanation:

Describing a population depending on an abiotic factor involves understanding how non-living elements of the environment, such as temperature, water, and sunlight, affect the organisms living within a particular area. A key example is how the amount of rainfall and temperature can influence soil quality, which in turn affects the types of plants that can thrive in an ecosystem. This subsequently determines the types of animals that inhabit the area since they depend on the plants for food, shelter, and breeding grounds.

To study these interactions, ecologists apply statistical tools like demography. They explore how population dynamics are influenced by both biotic and abiotic factors, which includes analyzing how various reproductive strategies impact the long-term viability of a population. This multi-faceted approach helps ecologists understand the complex web of dependencies in natural ecosystems.

The interplay between abiotic factors and biotic components defines the structure and character of a biome. For instance, in aquatic ecosystems, abiotic factors such as salinity, light penetration, and water temperature are crucial in determining which species can survive and flourish. All these components form the intricate mosaic of interactions that dictate life in various habitats.

Answer:

The correct option is -2.

Explanation:

Oxygen atom will have two electrons in its first shell and six electrons in its outermost, valence shell. To become stable, an oxygen atom will need to gain two electrons so that it has 8 electrons in its outermost, valence shell. When oxygen will gain two electrons from another atom, it will get a charge of -2. This is because it has acquired two more negative charged electrons. Hence, the correct option is -2.

Answer:

-2

Explanation:

Answer:

in sexual reproduction we get genes from both our parents and we have a combination of them...that leads to genetic diversity...more diversity means more chances to survive different environment conditions.... in asexual reproduction.. offsprings are identical.if environment conditions are rough...all of them won't stand a chance...and also....in sexual reproduction genetic variation can lead to evolutionary advancements

Farming increased the availability of food for humans is NOT a reason farming has hurt the environment.

Explanation:

Farming requires the tillage of land and therefore loosens the soil such that it is easily carried by agents of soil erosion – like wind and water.

In addition, most farming methods practice monoculture hence reducing the biodiversity of ecosystems in the region. Poor biodiversity leads to loss of species and low capacity to adapt to environmental changes/.

Farming also requires water to water the plants. This water is usually sourced from freshwater bodies like rivers and lakes. Often, this water is overdrawn leading to depletion of water to the environment denying other species their share of water.

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Answer: Cell wall and chloroplasts

Explanation:

Answer:

C

Explanation:

Answer:

B

releases energy that plants can use for life processes.

Explanation:

it is correct on study island

Answer:

The correct answer is "yes it satisfies the definition of the scientific law"

Explanation:

The scientific theory states the verified explanation of the natural world. This things or the experiments can be determined by repeatedly testing by the given scientific methods. The cell theory also meets the definition of the very known scientific theory as it has also helped in determining it by various experiments as well as the observations. The cell can be studied under the microscope by the basic staining procedures that has already been mentioned in the theory.

Answer:

Cell theory meets the definition of a theory because it has been tested over a long period of time, and scientists have plenty of evidence to support this theory. However, it doesn’t seem to meet the criterion of a scientific law. Scientists only know about life on this planet, so the theory may not be universal if life is found on other planets. In addition, scientists don’t have much data on the earliest forms of life on Earth.

Explanation:

Answer:

serving as a barrier.

Explanation:

The statement that All organism that are internal fertilizers develop theri offerings internally  is true

What organisms fertilize internally?

When a female organism undergoes internal fertilization, the procedure takes place inside her body. Mammals, reptiles, birds, and certain fish species all exhibit this frequently. The male gametes, or sperm, are placed inside the female reproductive canal during internal fertilization, where they join the female gametes, or eggs, to complete the fertilization process.

Internal fertilization occurs in species like humans, where the embryo grows inside the body of the female until it is ready to be birthed. In contrast, fertilization happens outside the body when using external nutrients, usually in water for aquatic organisms.

Most bony fish, numerous reptiles, some cartilaginous fish, the majority of amphibians, two mammals, and all birds exhibit this. Insects and reptiles lay leathery eggs, whereas birds and turtles lay eggs with

Answer:Down syndrome

Explanation:

Numerical disorders occur when there is a change in the number of chromosomes (more or fewer than 46). Examples of numerical disorders include trisomy, monosomy and triploidy. Probably one of the most well-known numerical disorders is Down syndrome (trisomy 21)

Answer

During osmosis, solvent particles move from an area of higher concentration to an area of lower concentration. When there is higher concentration of solvent particles inside the cell, most solvent particles will move out of the cell and the cell will shrink. When there is higher concentration of solvent particles outside the cell, most solvent particles will move in the cell and the cell will become turgid.

Explanation:

Osmosis can be described as the process  by which water molecules move along a concentration gradient form an area of higher concentration to an area of lower concentration. When water molecules move out of the cell, the cell will shrink. When the water molecules move inside the cell, the cell will gown and become turgid. Osmosis is a kind of passive transport.

Answer:

antibiotics tend to reduce/stop pain for a while but the bacteria/ virus may eventually be resistant to it

Explanation:

please give brainliest just need 4 more

Answer:

The correct option is D) to track the direction the sunflower heads were facing each hour throughout the  day.

Explanation:

The next step that Jane and Jill should take is to track the direction of each sun flower. They should also check whether the sunflower that is placed in the Sun is the only one that tilts or whether the other sunflowers also tilt. After properly tracking the results, they should be able to draw the results and deduce a conclusion. Hence, Option D is correct.

Sea urchin embryo requires temperature of 23 degrees to cleave, in lower temperatures the embryo cleavage slows down.

Explanation:

Although the sea urchins live in sea water in cold temperature, they require a temperature of around 23 degrees to cleave for fertilisation if this temperature is reduced the process of cleavage slows down eventually depleting the urchin population.

Temperature affects urchin survival through its influence on metabolic processes and how body size affects heat retention and loss. They must inhabit an environment that maintains their body within a temperature range supporting their metabolism.

The relationship between temperature and urchin survival relates closely to the physiology of the urchins and the role temperature plays in their metabolic processes. Temperature exerts an important influence on living things, including urchins, because from a metabolic standpoint, few organisms can survive at extreme temperatures. Enzymes within these organisms, crucial for metabolic processes, operate efficiently within a specifically narrow temperature range and can degrade at higher temperatures. More geographically, temperature also varies by latitude and body size also plays a key role in urchins as it affects heat retention and loss. Smaller organisms often lose heat at a faster rate because they have a greater surface area relative to their mass.

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A diagram that shows the energy in each trophic level of an ecosystem is called an ecological pyramid, hence option A is correct.

The ecological pyramid is the diagram that states the amount of energy within each tropic level of the ecosystem in a food chain and food web.

It defines as the interaction of the energy between the organism and the presence of the energy and matter within them. At the base of this pyramid producer is placed and at the top of the pyramid tertiary consumer is placed.

The energy flow follows the 10% rule through which energy is get reduced by 10 at each tropic level from the Sun to the consumers, if the producer has 10,000 kcal energy, the primary consumer has only 10,00 kcal energy.

Therefore, an ecological pyramid is a diagram that shows the energy.

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Answer:

 the correct answer is CO2 and ATP

Chargaff's rule will be applied to know the percentage of missing bases.

The table is filled and shown in attachment.

Explanation:

According to the Chargaff's rule, the base pairs of pyrimidine and purine should have the ratio of 1:1.

It is based on the principle that Guanine bonds with Cytosine should be in equal concentration while Adenine bonds with thymine should be in equal concentration. Chargaff rule applies to the DNA only.

Final answer:

Chargaff's rules can be used to determine the percentages of the missing nitrogenous bases in DNA. According to these rules, the concentration of adenine is always about the same as the concentration of thymine, and the same is true for guanine and cytosine. If the percentage of thymine is known, the percentages of adenine, guanine, and cytosine can be calculated accordingly.

Explanation:

Chargaff's rules can be used to determine the percentages of the missing nitrogenous bases in the DNA sample. According to Chargaff's rules, within each species, the concentration of adenine (A) is always about the same as the concentration of thymine (T), and the same is true for the concentrations of guanine (G) and cytosine (C). Therefore, in the given DNA sample, since the percentage of thymine is 22%, the percentage of adenine will also be 22%. Additionally, since adenine and thymine always pair up, the sum of their percentages will be 44%. Similarly, the sum of the percentages of guanine and cytosine will also be 44%, and since the percentages of all the nitrogenous bases should add up to 100%, the percentages of guanine and cytosine will be 56%/2, which is 28% each.

Underground mining is cost effective and consumes more time and energy than surface mining for mining coal from the underground.

Destruction and damages of land surfaces are caused due to underground mining that changes the form and topography of the land.

More possibilities for fatal accidents, flooding from groundwater or sea water, methane gas explosions, failure of air ventilation machines are there in underground mining, compared to Surface mining.

Underground mining requires proper ventilation and insecure to workers than surface mining.

Answer:

Surface miners work aboveground in the open air.

Explanation:

Answer: restriction endonuclease.

Explanation: restriction endonuclease recognize a specific site at a DNA molecule called restriction site and attach to it and cleave DNA into pieces by the cleavage of phosphodiester bond. Restriction site are few nucleotides in length found in the middle of the polynucleotide chain.

Answer:

Island archipelagos are called island group is a chain or cluster or collection of islands.

Explanation:

Archipelago is derived from  Greek Word that means chief sea.

It is isolate and contain large amount of water or  large land mass

Ex-Scotland has 700 islands that is surrounding the mainland which form an archipelago.

Answer:

When two oceanic plates converge, one of the plates sinks underneath the other and forms a deep depression called ocean trench. The plate sinks further down into the mantle and begins to melt. The molten rock (magma) rises toward the surface from the melting plate forming a chain of volcanic islands (island arcs) behind the ocean trench.

Explanation:

The Earth's crust is divided into several hard and rigid tectonic plates that slide over the mantle. Tectonic plates can interact in three different ways: converge (move toward one another), diverge (move away from one another) or transform (slide past one another). The plate margins are the boundaries where plates meet and they are of three kinds: oceanic-oceanic, continental-continental, and continental-oceanic.

When two oceanic plates converge, one of the plates sinks underneath the other and forms a deep depression called ocean trench. The plate sinks further down into the mantle and begins to melt. The molten rock (magma) rises toward the surface from the melting plate forming a chain of volcanic islands (island arcs) behind the ocean trench.

An island arc comprises a curving series or group of volcanic islands that form near the convergent boundary of two tectonic plates. They are formed from the volcanic activity along a subduction zone, where one oceanic tectonic plate subducts (one plate sinks under another plate into the mantle of the Earth) another oceanic plate. This movement pushes the lower plate further deeper to a point where the temperature is sufficient to melt the subducted plate and results in the production of magma directly below the top tectonic plate. This magma then rises through fractures and reaches the upper crust and forms volcanoes which eventually rise high enough to become islands. The islands of Japan, the Aleutian Islands, etc are examples of island arcs.

When two continental plates converge, they collide and compress to create complex mountain ranges having great height. The Himalayas formed by the collision of the Indian-Australian plate and the Eurasian plate is an example.

During the convergence of continental and oceanic plates, the denser oceanic plate sinks below the continental plate and a chain of volcanoes known as a volcanic arc are formed. The examples of volcanic arcs are the Cascade Mountains of North America and the Andes Mountains of South America.

Answer:

Through "Compound microscope" cells were first observed.

Explanation:

Robert Hooke used compound microscope to detect the cork cell which laid to the basis for detection of the cell in 1665. The microscope was planned by him to detect a part of cork where he visualized tiny elements fixed combinedly and he called those elements as “cell”. He didn’t realize a little organelles within the cell as he detected the lifeless plant cell with cell walls which look like minor chamber. The compound microscope is used to assess the magnified pictures of the model existing in the glass slide and the magnification power used by Robert Hooke is 50X. The tests and explanations ended using numerous lenses were logged in his book called "Micrographia" or some Physiological Descriptions of Minute Bodies completed by Magnifying Glasses with Explanations and Inquiries Thereupon. "The cell is the structural and functional unit of an organism where plants and animal cells contain different cellular organelles with specific function."

Compound microscope was first used to observe cells.

Explanation:

In 1965, Robert Hooke observed a slice of cork under a compound microscope and saw the compartments in it. He named these compartments as cell.

The compound microscope has a high magnification power. It uses two convex lenses of short focal length. These lenses are objective lenses and eyepiece. It has resolution of 10X, 40X to obtain a magnified image of tiny entities like cell.

Answer:

A solution at pH 6 contains 100 times more H+ than the same amount of solution at pH 8.

Explanation:

pH of a substance determines the hydrogen ion concentration of a solution. Acidic solution tend to have a higher concentration of H+ ions as compared to that of water. They have a concentration greater than 1 × 10^{-7}  M. Basic solutions have lesser concentration of H+ ions as compared to that of water. They have a concentration lesser than 1 × 10^{-7} M. A solution from pH range 1 to 6 will be acidic. A solution from pH rage 8-10 will be basic.

Final answer:

Cells are classified based on whether they have a membrane-bound nucleus into prokaryotic and eukaryotic cells in Biology.

Explanation:

The subject of this question is Biology. The student is asking about the classification of cells based on whether they contain membrane-bound nuclei.

Based on whether they have a nucleus, there are two basic types of cells: prokaryotic cells and eukaryotic cells. Prokaryotic cells do not have a membrane-bound nucleus, while eukaryotic cells do have a membrane-bound nucleus.

For example, animal cells, plant cells, fungal cells, and protist cells are classified as eukaryotic cells, while bacterial cells are classified as prokaryotic cells.

Answer:the first on is a convergent boundary and the second also looks like a convergent boundary

Explanation: