The tundra is broken up into 2 parts. What are these 2 parts?

True. The threshold is the smallest intensity of a stimulus that must be present for it to be detected.

option A is the correct answer.

The threshold refers to the minimum level of intensity or magnitude of a stimulus that is required for it to be detected or perceived.

This is true across various sensory modalities, including vision, hearing, touch, taste, and smell. The threshold can vary depending on a variety of factors, including the type of stimulus, the background noise or interference, the individual's sensory sensitivity, and other contextual factors.

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Answer:

Desert

Explanation:

Savannahs don't have cacti, and tundras tend to be snowy, cold places.

The removal of water and solute molecules from the filtrate after it enters the renal tube is called reabsorption.

In the kidney, reabsorption is the movement of water and solute molecules from the tubule back into the bloodstream. It specifically occurs in the proximal part of the tubule. The reabsorption happens using both secondary active transport and isotonically.

Reabsorption allows various useful solutes (such as amino acids and glucose), salt, and water that already passed Bowman's capsule to return into the body's circulation instead of being thrown away as waste via urine. The result is urine that is composed mainly of water, dissolved salts and ions, and waste like ammonia, uric acid, and creatinine.

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Answer:

D. So each generation of DNA would have a different weight to distinguish them by.

I took the test

Meselson and Stahl performed an experiment to find out the semiconservative property of DNA and to differentiate the DNA weight of alternative generation both scientists used heavy nitrogen. Thus option A is correct.

When a double-stranded DNA undergoes replication, it results in the formation of 2 double-stranded DNAs and each newly formed DNA has one parental DNA strand and one new DNA strand and this is the semiconservative property of DNA.

Heavy nitrogen of media will appear in the newly synthesized DNA strand so each generation of DNA would have a different weight . So option A is correct.

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Even if all the cells have the same DNA they biochemical function are different, that's because differents sets of genes must be turned on and off in each cell type by the action of enzymes and other molecules. Each cell have the same 20,000 or so genes but they are biochemically selected by the action of molecules as hormones and chemical signaling. Therefore, different cells use different parts of the DNA code as directions.

Answer:

B. What the climate was like in the area long ago.

Explanation:

All flowering plants produce pollen grains with distinctive shapes that change as climatic factors change as plants are generally distributed based on patterns of temperature and precipitation. So, fossil pollen records can tell us about the past climate.

Answer:

sensitive

Explanation:

Answer:

see below

Explanation:

2. neutron and proton

3. electron

4. in the nucleus

The test confirmed by provider for Isabella who is suspected of having leukemia and is ordered for biochemical studies and a bone marrow aspirate and biopsy is: (c) Philadelphia chromosome test.

Leukemia is the cancer of the blood-forming tissues of the body. Since blood consists of immune cells, therefore leukemia hinders the infection fighting ability of the body. The exact reason for leukemia remains unavailable, however, there are some high risk factors like radiations, chemical, etc.

Philadelphia chromosome test is a specific test for the diagnosis of different forms of leukemia. If the test turns out to be positive it suggests that the individual suffers from the cancer.

The given question is incomplete, the complete question is:

Isabella is suspected of having leukemia and the provider orders biochemical studies and a bone marrow aspirate and biopsy. The results include white blood cells (WBCs) greater than 200,000 cells/mm3 normal red blood cells (RBCs), hyperplastic myeloid cells, and the absence of serum leukocyte alkaline phosphatase. Which test will the provider order to confirm a diagnosis in this patient?

a. Chest radiograph

b. Coagulation studies

c. Philadelphia chromosome test

d. Serum protein electrophoresis

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The correct answer is c. random differences in survival and reproduction among the individuals in a population.

Genetic drift is a mechanism of evolution that refers to the random fluctuations in allele frequencies within a population over time. It occurs when certain alleles become more or less common in a population due to chance events rather than natural selection. These chance events can include random differences in survival and reproduction among individuals in a population, which can lead to the random loss or fixation of alleles. Genetic drift is particularly influential in small populations where chance events can have a more significant impact on allele frequencies.

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The advantage for plants having undigestible seeds is that it allows seeds to reside in the gut until conditions are appropriate for germination.

Fruits are a source of nutrition for animals that consume them, and they are also a means of seed distribution for plants that produce them. Many types of plants generate fruit that is consumed by animals; nevertheless, the seeds of such plants are usually indigestible. As a result, the seeds can be dispersed into new areas by animals that eat the fruit.

However, having undigestible seeds provides a distinct benefit to plants: it allows seeds to reside in the gut until conditions are appropriate for germination, which aids in seed growth and germination.

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Explanation:

The Rh factor is one of the proteins on RBCs used to indicate whether the blood of two different people is compatible when mixed – such as blood of a mother and her baby at birth.

It is routine and important that the Rh factor for a mother and unborn child be determined during pregnancy.

Hope this is what you wanted.

Answer:

water undergoing electrolysis

the number of carbon atoms

mass

the mass of the mouse minus the mass of waste produced by the snake.

6

Explanation:

A chemical change is characterized by irreversible reactions that produce new products. Water undergoing electrolysis is a chemical change. Thus, the options are 1. A, 2. C, 3. C, 4. A, and 5. C.

A chemical change has been defined by the permanent alteration of the reactants that produce new substances with varied chemical characteristics. Water undergoing electrolysis produces new substances, while boiling, evaporation, and freezing are changes in phases. Thus, 1. A is correct.

Photosynthesis is a plant process marked by the production of sugar and oxygen atoms. The number of carbon atoms in the reaction remains the same. Thus, 2. C is correct.

In a chemical reaction, the mass of the reactant changes as new products are formed but the total mass remains conserved. Thus, 3. C is correct.

Snake is a predator and a consumer that feeds on rats. The snake's mass is equivalent to the waste produced by the snake subtracted from the mouse's mass. As waste is eliminated from the body. Thus, 4. A is correct.

Cellular respiration is the process that occurs in organisms where glucose and oxygen are used to produce six carbon dioxide and six hydrogen molecules as there are 12 hydrogens on the reactant side. Thus, 5. C is correct.

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Passenger pigeons were ecologically important to trees and plants as : 4.) All of the above hold ecological importance.

Passenger pigeons were ecologically important to trees and plants in number of ways. They dispersed seeds and nuts from berry bushes and trees like beech, white oak, and chestnut far from their original source and also allowing for the spread of these species.

Birds left thick path of droppings behind covering the ground below but enriching soil with nitrogen-rich fertilizer for years to come. Their movement through an area was at first destructive as they would eat large amounts of fruits and nuts, but then regenerative to land as the droppings fertilized the soil.

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Answer:

Air lower in the atmosphere is more dense than air above, so air pressure down low is greater than air pressure higher up. ... Since warm air is less dense and creates less air pressure, it will rise; cold air is denser and creates greater air pressure, and so it will sink.

Explanation:

Answer:

answer is 0 degree I guess

Explanation:

not sure about it

Answer:

reflection please mark me brainliest

Answer: (D) 360

Explanation:

An adult panda bear must eat at least 30 pounds of bamboo in a day. There are 12 adult pandas living in part of a bamboo forest 360 pounds must available each day.

Panda comes under the specialist because its eats only bamboo because it's present abundantly and Thus they don't have to fight with other animals to get it.

Bamboo is rich in fibre but has less nutrients, so pandas have to eat 20 to 40 pounds of the elements every day just to get by.

Thus, option "D" is correct, 360.

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Sees orange pepper, signal passes to brain, information is processed and he dislikes orange, signal goes to muscles, and he walks away.

Pests that may cause holes in pepper leaves include slugs, flea beetles, grasshoppers, cutworms, armyworms, tomato/tobacco hornworms, cabbage loopers, Colorado potato bugs, or aphids. The good news is that you can eliminate these pests and prevent additional harm to your pepper plants.

Notwithstanding my limited experience, dimethoate and malathion typically offer great control of this bug. After these tests were conducted, zeta-cypermethrin and spinosad (GF-120 Naturalyte), two novel substances, have been registered for the treatment of pepper maggot (Mustang).

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Answer:

Forested floodplain on Indian Creek, a tributary of Anacostia River in Prince George’s County, Maryland.

Explanation:

The climate in the Anacostia watershed been like over the past few 12,500 years was forested, floodplain on Indian Creek, a tributary of Anacostia River in Prince George’s County, Maryland.

The long-term pattern of the weather in a place is called the climate. Climate is the There is different climatic regions on the earth and this is due to changes in location.

One of the most densely populated metropolitan basins in the Chesapeake Bay watershed, the Anacostia River watershed encompasses suburban Maryland and the District of Columbia.

Therefore, for the past 12,500 years, the Anacostia watershed in Prince George's County, Maryland, has had a climate that was characterized by forested floodplains and Indian Creek, a river that flows into the Anacostia River.

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The gene in the middle is R in a three-point testcross if the most abundant classes are rqh and rqh and the rarest classes are rhq and rhq.

The locations of three genes in the genome of an organism are identified using a three-point cross. A homozygous recessive individual is crossed with a person who is heterozygous for three mutations, and the progeny's phenotypes are graded. The parental gametes produce the two most prevalent phenotypes, while a double-crossing during gamete creation produces the two least prevalent phenotypes. The geneticist can identify which gene is situated between the other genes on the chromosome by comparing the phenotypes of the parental and double-crossover individuals. The most prevalent phenotypes are rqh and rqh while the least prevalent phenotypes are rhq and rhq, therfore the middle gene after comparing is R.

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Answer:

Different selective pressures were acting upon the two populations, leading to an increase in genetic variation and the formation of two new species.

The following are plausible responses to the objection that cloned people would not be unique individuals, and thus be deprived of human dignity and worth is a. Clones will be able to avoid mistakes made by their older "twins."

In response to the objection that cloned people  frstly, identical twins are more like each other than a clone would be to the one cloned (option b). This is because clones share only genetic similarities, whereas identical twins share the same environment and upbringing as well.  Secondly, clones would be different from everyone but their progenitors, and therefore would have dignity and worth except when compared to their progenitors (option c). This implies that clones would still have their own individuality and uniqueness, as they would only share genetic information with their progenitors and not their experiences or environment.

Lastly, clones and the individual cloned will have the same personality, but will be able to use it in different ways (option d). While they may share genetic traits, the development of personality is influenced by a combination of genetics, environment, and life experiences. Therefore, the clone and the individual cloned would still have unique identities and abilities to contribute to society. The following are plausible responses to the objection that cloned people would not be unique individuals, and thus be deprived of human dignity and worth is a. Clones will be able to avoid mistakes made by their older "twins."

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All of the above statements are true of the gut microbiota:

Generally, the highest concentration of GI tract microbes is found in the colon.

Metabolism by the gut microbiota results in small amounts of vitamins and short-chain fatty acids which can be absorbed and utilized by cells of the body.

Normally, beneficial bacteria vastly outnumber harmful bacteria in the microbiota.

The gut microbiota, also known as the gut flora, is the community of microorganisms that reside in the human gastrointestinal tract. The human GI tract is home to a complex ecosystem of over 100 trillion microbial cells, which comprise the gut microbiota.

Generally, the highest concentration of GI tract microbes is found in the colon. Metabolism by the gut microbiota results in small amounts of vitamins and short-chain fatty acids which can be absorbed and utilized by cells of the body. Normally, beneficial bacteria vastly outnumber harmful bacteria in the microbiota.

So, the correct option is All of the above.

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Oligodendrocytes are the glial cells that myelinate axons in the brain and spinal cord.

Oligodendrocytes wrap their cell membranes around axons, forming a layer of insulation that speeds up the transmission of nerve impulses.

Myelin sheaths are made up of multiple layers of oligodendrocyte plasma membrane, with the cytoplasm squeezed out in between. This results in a very thin, tightly packed sheath that acts as an electrical insulator.

The myelin sheath increases the speed of nerve conduction by up to 100 times, allowing messages to travel much more quickly along axons.

This is essential for the efficient communication between neurons, and is necessary for many cognitive functions, including learning, memory, and movement.

Oligodendrocytes are found throughout the central nervous system, but they are most abundant in the white matter, which is made up of bundles of myelinated axons.

The white matter is responsible for carrying information between different parts of the brain and spinal cord.

Myelin sheaths are essential for the proper functioning of the central nervous system, and damage to these sheaths can lead to a variety of neurological disorders, including multiple sclerosis.

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The word vulva, which meaning covering, is used to describe the outside of the female reproductive system. The vulva, which is situated between the legs, protects the access to the vagina and other internal reproductive organs.

The uterus, fallopian tubes, ovaries, and the vagina are a woman's internal reproductive organs.

The muscular, hollow tube known as the vagina connects the uterus to the vaginal opening. The muscular walls of the vagina allow it to expand and contract. The vagina can handle objects as narrow as a tampon and as broad as a newborn because to its flexibility. Mucous membranes line the muscle walls of the vagina, insulating and moistening it.

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Answer:

animals and plants

Explanation:

Sea otters are one of the few mammals that are able to regulate their body temperature in cold water through the use of their muscle cells. This adaptation has allowed them to thrive in their cold, marine environment.

Sea otters need their muscle cells to produce heat because they live in cold water and must maintain their body temperature. This is because they do not have a thick layer of blubber like other marine mammals such as whales or seals, and therefore have to rely on other methods of heat retention.Their dense fur helps to insulate them, but it is their muscle cells that produce the most heat. By contracting and relaxing their muscles, they can generate heat to maintain their body temperature even in cold water. This is especially important for sea otter pups who are unable to regulate their body temperature when they are born and rely on their mother's warmth.Sea otters are one of the few mammals that are able to regulate their body temperature in cold water through the use of their muscle cells. This adaptation has allowed them to thrive in their cold, marine environment.

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