Match each stage of demographic transition with its correct description. (3 points)

a. High birthrates, high infant mortality rate, no health services or family planning options
b. High birthrates, decline in deathrates, increased health services but limited family planning options
c. Low birthrates, low deathrates, higher quality of health services and family planning options
here's the CORRECT answer
Stage 1 A
Stage 2 B
Stage 3 C

The component of a vaccine that makes it effective is the antigen.

What is a Vaccine?

A vaccine is a biological preparation that induces active acquired immunity to a specific disease. It contains an agent that resembles an infective microorganism and is frequently composed of weakened or killed forms of the microbe, its toxins, or one of its surface proteins. Vaccines are intended to stimulate the body's own immune system in order to protect the individual from future infection or disease.

11) An antigen is a substance that causes the body to produce antibodies when it enters the body. These antibodies help the body recognize and fight the antigen if it enters the body again.

12) A vaccination is a way of introducing a weakened or killed version of a particular virus, bacteria, or toxin into the body. This weak or dead version of the virus, bacteria, or toxin stimulates the body's natural defense system to produce antibodies that are specific to that virus, bacteria, or toxin. These antibodies can then recognize and fight off the real virus, bacteria, or toxin if the body is ever exposed to it, thus preventing the individual from getting the disease. This is known as active immunity. The immunity created by the vaccination is typically long-lasting, and in many cases, lifelong.

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Answer:

C wind erosion is most responsible for the formation of sand dunes.

Explanation:

Sand dunes are formed when wind blows loose sand from a beach, desert, or other location, and deposits it in a new location. The sand is then shaped by the wind into dunes, which can vary in size and shape depending on the strength and direction of the wind. Water erosion, volcanism, and glaciation can all also contribute to the formation of sand dunes to some extent, but wind erosion is typically the primary process responsible for their formation.

Therefore, a half-life of 2000 years saying that 100 grams will decompose to 50 grams in 2000 years. That 50 g will decompose to the requested 25 grams in another 2000 years. 2,000 + 2,000 = 4,000 years are required.

Elements are substances that cannot further breakdown as a result of any chemical reaction. There are a certain number of protons in each element's atom.

Since they make the organic compounds that are present in all living things, chemical elements are crucial to living things. Carbon is the primary element in all organic compounds, including lipids, nucleic acids, proteins, and carbohydrates.

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Here the physical changes are seen in the burning candle, cooling candle, tearing paper, wet paper, salt, and water in the test tube, while the chemical reactions are involved in the burning of the paper and the mixing of the vinegar with soda.

The physical change is the change in form, such as when the candle is burned or cooled down, then the wax that is formed has the same properties as the candle, or the paper pieces after being torn have the same properties. Chemical changes involve the formation of new things, such as when paper is burnt, this produces ash with a different chemical nature, and when the vinegar and soda is mixed, it produces a different product.

Hence, here the physical changes are seen in the burning candle, cooling candle, tearing paper, wet paper, salt, and water in the test tube, while the chemical reactions are involved in the burning of the paper and the mixing of the vinegar with soda.

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According to Gordon Allport, the type of personality trait that is the most dominant is the central trait or the basic trait.

This refers to a distinctive quality or character of a person. For example curiosity, fair, and dark. etc.

Gordon Allport is a psychologist and personality theorist. He divided personality traits into three categories: cardinal, central, and secondary. According to Allport, the most dominant type of personality trait is the central trait, also called as the "basic trait."

These traits are fundamental to a person's character and shape their overall personalities, such as honesty, kindness, and intelligence. Cardinal traits, on the other hand, are rare and extremely influential traits that shape a person's entire life and behavior, such as religious devotion or political ideology. Secondary traits are less important and more specific, such as being punctual or having a sense of humor.

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Answer:

The wave are following the oscillate wave

Explanation:

Meiosis is the common factor which is responsible for the production of new combinations or recombination in the organisms which reproduce through sexual mode of reproduction.

Meiosis is a special type of cell division which occurs in the germ cells in organisms which reproduce through sexual mode of reproduction. These organisms produce the gametes, such as sperms or egg cells. Meiosis involves two rounds of division which ultimately result into formation of four daughter cells with only one copy of each chromosome.

Recombination or new combination results when two molecules of DNA exchange pieces of their genetic material with each other. One of the most common examples of recombination can be observed during meiosis specifically, during the prophase I stage, when homologous chromosomes line up in pairs and swap some segments of their DNA.

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Answer: 2 increased use of fossil fuels

Answer:

Elephants are mainly found in savanna biomes, grassland ecosystems, tropical rainforest biomes, desert biomes, tundra biomes, and temperate deciduous forest biomes.

Explanation:

The five conservation related conventions are:

1. Convention on Biological Diversity

2. Convention on International Trade in Endangered Species of Wild Fauna and Flora

3. Convention on Migratory Species

4. Ramsar Convention on Wetlands

5. Convention on the Conservation of Antarctic Marine Living Resources

The Convention on Biological Diversity is the most embracing of these conventions, as it provides the most comprehensive coverage of conservation related issues. Its focus is on the conservation of biodiversity, sustainable use of resources, and the fair and equitable sharing of benefits arising from the use of genetic resources. Additionally, it provides strategies and commitments to ensure that exploitation of living resources is done with sustainability and responsibility, bringing it into line with the principles and goals of ecological conservation.

The force or speed of a machine is multiplied by its mechanical advantage. It is a figure (without units) that indicates how many times the apparatus multiplies a force (or speed). I. M. A. An ideal machine's mechanical advantage is the optimal mechanical advantage. Thus option A is correct.

The ratio of load to effort is referred to as a machine's mechanical advantage. The efficiency of a machine is due to its mechanical advantage. Effort/Load = Mechanical Advantage. The mechanical advantage M A is equal to F 0 F I where F 0 is the output force and F I is the input force.

Therefore, multiplies the resistance force.

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A plant's roots absorb water from the nearby soil. This is the best example of how living things play a role in the water cycle. Thus, the correct option is A.

The water cycle is the biogeochemical cycle which shows the continuous movement of water within the Earth and its surrounding atmosphere. Water cycle is a complex system that includes many different processes such as evaporation, precipitation. Liquid water evaporates into the form of water vapor, condenses back to form clouds, and precipitates back to the earth in the form of rain and snow particles.

Plants absorb water from the soil. The water then moves from the roots through the stems to the leaves of the plant. Once, this water reaches the leaves, some of it evaporates from the leaves, adding to the amount of water vapor in the atmosphere. This process of evaporation through the plant leaves surface is called transpiration.

Therefore, the correct option is A.

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Answer:

Bilateral symmetry is a type of body plan in which the left and right sides of the body are mirror images of each other. This type of body plan lends itself to special divisions such as head, thorax, and abdomen. Examples of animals that are bilaterally symmetrical include humans, fish, frogs, butterflies, and worms.

Explanation:

Answer:

Explanation:

d

If Cystic fibrosis is the result of deletion mutations that are inherited from both parents, then the sample chromosome that shows an example of a deletion mutation is  B. RSTUV-XYZ ----> STUV-XY.

A deletion genetic mutation can be defined as an alteration in the genetic material of the cell of an individual associated with the loss of one or more nucleotides in the original sequence.

Therefore, with this data, we can see that a deletion genetic mutation is caused by the loss of nucleotides in the DNA.

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Answer:

Narcotics

Explanation:

Narcotics, or otherwise commonly known as opioids are massively known for pain relief. There's opioid epidemic here in US b/c people are abusing the drug at extremely alarming rates. You might have heard of codeine, morphine and fentanyl, these are some of the most potent and dangerous drugs if used without proper prescription.

Answer:

bh

Explanation:

Answer: The answer for 7 is C no light penetrates that far

8  d

9 D

10 A

Explanation:

Carps, tilapia, catfish, and milkfish are particularly significant as protein sources for low-income families in developing nations. Freshwater finfish and tiny marine finfish species from the catch fisheries are also essential.

Pisciculture is the proper response. Pisciculture is the practice of rearing fish in ponds or tanks for human consumption. Tilapia, salmon, carp, and catfish are the most significant species that are raised on a global scale.

Long-chain omega-3 fatty acids, iodine, vitamin D, and calcium are just a few of the vital nutrients that can only be found in fish. Fish, one of the most significant sources of proteins and micronutrients, could be a powerful tool in the fight against malnutrition in India.

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Brighter feathers, however, give male birds a reproductive advantage and assist them attract female birds for mating. Because of this, populations of birds with brighter plumage continue to exist despite having a higher risk of being eaten by a predator.

They are used to entice prospective partners. Birds may recognize their own species by using colors and patterns. Birds can camouflage themselves against predators by using different colors. When courting, colors are utilized to draw attention (ie: courtship displays).

Some animals are colored for physical protection, and some frogs can change the color of their skin to regulate their body temperature. Pigments in the skin of some animals prevent sunburn.

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Answer: Its D- become the dominant bird in the population

Explanation: I got it right on the test

lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, exhalation

The functions of the respiratory system include gas exchange, acid-base balance, phonation, pulmonary defense and metabolism, and handling of bioactive materials.

The respiratory system is responsible for obtaining oxygen and getting rid of carbon dioxide and aiding in the speech production and in sensing odors.

parts of respiratory system:

Nose

Mouth

Throat (pharynx)

Voice box (larynx)

Windpipe (trachea)

Airways (bronchi)

Lungs

Most living things need the oxygen to survive. Oxygen helps organisms grow, reproduce, and turn food into the energy. Humans get oxygen they need by breathing through their nose and mouth into their lungs. Oxygen gives our cells ability to break down food in order to get the energy we need to survive.

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The complete question is :

What does the respiratory system do ?

Your requirement for electricity decreases as your home's energy efficiency rises, reducing your dependence on carbon-intensive power plants, and reducing the number of greenhouse gases emitted into the atmosphere, hence option 4 is correct.

This lowers the plant's demand from your house, which helps the environment by lowering carbon dioxide emissions and lessening atmospheric emissions of greenhouse gases.

This rise is the result of the air's carbon and oxygen being combined to create CO2 during the burning of coal or oil.

Therefore, greenhouse gas concentrations have increased due to human activity, hence option 4 is correct.

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Numerous applications of biotechnology exist, including those in medicine, energy production, food processing, waste management, and many others.

Gene therapy, a method to correct genetic defects in an embryo or kid, is a valuable application of biotechnology in the medical industry. Other applications of biotechnology include the usage of various equipment like the ECG and EEG. Similar to energy generation, biomass production falls under the category of biotechnology. Biotechnology is used in enterprises to process food utilizing a variety of scientific methodologies, including engineering techniques. Modern biotech is the controlled manipulation of genes and live tissues to produce new tissue, as opposed to traditional biotech, which uses natural organisms to produce or modify food or other valuable goods for human use.

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According to the information, the ratio of black, chocolate, and yellow puppies in the F1 generation is found to be 3: 1: 4.

The Punnett square may be defined as a type of table through which all of the possible outcomes for a genetic cross between two individuals with known genotypes are given.

When a yellow female with genotype Bbee is crossed with a black male with genotype BbEe. It produces offspring with the genotypes BBEe, BbEe, BBee, Bbee, BbEe, bbEe, Bbee, and bbee in the F1 generation. But the phenotype of yellow is determined by the presence of homozygous ee allele. While black color B is dominant over the chocolate color, b.

Therefore, according to the information, the ratio of black, chocolate, and yellow puppies in the F1 generation is found to be 3: 1: 4.

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Both volcanic glass and volcanic rock are produced as lava cools. As part of a powerful volcanic eruption, magma may potentially erupt into the Earth's atmosphere.

In the form of volcanic rock known as tephra, this magma solidifies in the atmosphere. Tephra is most often known as volcanic ash in the atmosphere.

Volcanoes can spew forth a significant volume of heated lava (a geosphere event), which melts mountain glaciers (a hydrosphere phenomenon).

Therefore, flooding and mudflows (geosphere) might affect settlements along streams downstream from volcanoes (biosphere).

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Answer: B

Explanation: Trust

Division is a biological categorization level that is used to categorize or research plants. Consequently, a division must be related to plants.

Living creatures are categorized by scientists based on their biological characteristics. Organisms are grouped based on how similar they are. In the past, similarity was determined by examining the physical characteristics of an organism, but modern classification uses a variety of techniques, including genetic analysis.

As according similarities and differences, recognized species are divided into several groupings or taxa, which is the definition of classification. Phylogenetic classifications, Natural classifications, & Artificial classifications are the three categories of categorization.

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Answer:

cell B

Explanation:

it has more mitochondria therefore more metabolism

The statement that describes an environmental consequence of sustainable land use is that If common land use is restricted, it can slow down the economy. That is option D.

Sustainable land use ensures the fair and balanced distribution of land, water, biodiversity and other environmental resources among the various competing demands to meet current and future human needs.

Therefore, although the practice of sustainable land use is important, it can slow down the economy of the country as there would be decrease in competition in land space used for agricultural production.

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Rocks doesn't have the exact same mineral make up as they are made of different composition.

A naturally occurring collection of minerals and/or mineraloids is called rock. There is no known chemical makeup of rocks.

Minerals are naturally occurring substances with unique atomic structures, compositions, and chemical and physical properties. Typically, two or more minerals are mixed together through geological processes to form rocks.

Because of their minerals, formation processes, and processes that have affected the rocks since they were formed, various rocks have different properties.

Rocks are composed of minerals and have a wide range of traits or properties. When a rock is ground into a powder, it takes on the color of streak, and a rock's luster indicates how shiny it is. Other characteristics include size, shape, texture, and hardness.

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