The life span of a star depends on:
plz hurry :)

Answer:

B. Uracil

Explanation:

Although RNA is typically single-stranded, base pairing does occur. In RNA adenine binds to uracil and cytosine binds to guanine

Answer:

URACIL jeeze I did that

Explanation:

Intercropping alters the ecology of a farm as option I: Intercropping increases diversity, and option II. Intercropping promotes plant mutualisms.

Intercropping may be a promising strategy to promote soil microbial diversity and functioning by broadening the variety of plants in agricultural systems. Plant-microbe interactions (mutualisms).and how much they affect crop productivity in the field are still poorly known, though. Through increased plant resource efficiency (space, nutrients, and water) and natural weed, disease, and insect pest reduction, intercropping can boost climate resilience.

The practice of cultivating many crops simultaneously in the same space is known as intercropping. Intercropping can be done in a number of ways, but the most popular is to plant the crops in different rows or strips.

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b) Staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals.

A Gram-positive, spherical particles bacterium that pertains to the Bacillota and is a common member of the body's microbiota, commonly found in the sinus system as well as the skin.

These bacteria are spread through contact with a sick person, through the use of a contaminated object, or through inhaling infected droplets distributed by coughing and sneezing. Although skin infections were also common, bacteria may propagate through the arteries and invade distant organs.

S. aureus is frequently encountered in nature (soil, water, and air), as well as in the nose and also on human skin. S. aureus is just a Gram-positive, spherical, non-spore-forming bacterium of the Staphylococcus genus.

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complete question:

In 1959, doctors began using the powerful antibiotic methicillin to treat infections of Staphylococcus aureus, but within two years, methicillin-resistant strains of S. aureus (MRSA) appeared. How did the resistant strains of S. aureus emerge?

a) In response to the treatment of Staphylococcus aureus infections with methicillin, some bacteria began to synthesize cell walls using a protein that was not affected by methicillin. These bacteria survived the methicillin treatments and reproduced at higher rates than did other individuals. Over time, these resistant individuals became increasingly common.

b) Staphylococcus aureus bacteria that were able to synthesize cell walls using a protein that was not affected by methicillin survived the methicillin treatments and reproduced at higher rates than did other individuals. Over time, these resistant individuals became increasingly common.

c) In response to the treatment of Staphylococcus aureus infections with methicillin, bacterial populations gradually began to synthesize cell walls using a protein that was not affected by methicillin.

Answer: Groups 1 and 2 (bottom left of the periodic table)

Explanation:

Answer:

c  multicellular

Explanation:

Answer:

D.) Is acceptable if it fits within the daily meal plan.

Explanation:

Depending on how much and how often one snacks, if it fits within a healthy, daily regimen it should lead to no problems. Anorexia has a much more extreme and long-term cause than healthy snacking would even contribute to. Depending on the person and their health issues, it is not unhealthy to snack and does not need to be avoided unless it becomes an issue. While many snacks can be unhealthy, they will not lead to kidney failure just because they are high in fat and salt. (As long as it's relatively healthy snacks you're talking about.)

Regards!

Snacking is healthy when it fits into the daily meal plan, hence option d is correct and acceptable with a daily meal plan.

Snacking provides glucose for a particular time when having a long duration between meals. To remove hunger it is best to source for providing between meals.

The meal should be taken at the proper time, so it provides more energy for proper body function, snacking is helpful for providing energy but it should be taken in a limited amount.

Snacking can be harmful when it is taken to a large extent, can create digestive problems, and also be defective for mental health, but at a limited amount, it would be good.

Therefore snacking is healthy when fitts into the daily meal plan, So option d is correct.

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Answer:

natural selection cause a change in an allele frequencies over time, therefore this increases the likelihood that certain individuals with specific alleles will survive to a reproductive age, enabling them to pass in their alleles to their offspring.

Answer:

somatic

relating to the body, especially as distinct from the mind.

IVF, gamete intrafallopian transfer, pronuclear fallopian tube transfer, fallopian tube embryo transfer, and fertilized egg intrafallopian transfer are some examples of the ART.

An embryo is the first stage of a multicellular organism's development. Embryonic development is the phase of life cycle that starts right after the male sperm cell fertilizes the female egg cell in sexually reproducing animals.

The various stages of a baby's growth are what distinguish an embryo from a fetus. According to James A., "the embryo is defined as the developing pregnancy from the time of fertilization to the conclusion of the eighth week of gestation, at which point it is known as a fetus."

Thus, Examples of ART include in vitro fertilization (IVF), gamete intrafallopian transfer, pronuclear fallopian tube transfer, fallopian tube embryo transfer, and fertilized egg intrafallopian transfer.

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A controversial environmental issue in my community is river pollution. that the city's sewage goes to the river in the wrong way, with that all life in that river is improper, the conflicts associated with the "tragedy of the commons" are affecting the solutions to the problems, because companies want to continue throwing pollution in the rivers but the population wants.

Polluted rivers are those springs that receive in their waters all kinds of polluting residues such as chemical, physical and biological agents. They are harmful to soil, fauna, flora and human activities. Freshwater sources are vital for humans, but they receive a large number of pollutants.

With this information, we can conclude that Rivers are polluted by the contamination of organic waste, including human and animal excretions, and agricultural waste resulting from plant decomposition.

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Central vacuole

is found in plant or algae but not found in animal cells (d).

A cell membrane is found in both plant/algae cells and animal cells. The chloroplast is found in plant/algae cells, but not in animal cells.

The central vacuole is also found in plant/algae cells, but not in animal cells. The centriole, however, is only found in animal cells.

The cell membrane is an essential structure in all cells that functions as a barrier between the inside and outside of the cell, as well as controlling the movement of substances between the two.

It is composed of a phospholipid bilayer with embedded

proteins

and glycoproteins.

Chloroplasts are found in plant/algae cells, but not in animal cells. They are organelles found in the cells of plants, algae, and other photosynthetic organisms.

They are responsible for converting light energy into chemical energy, which is then used to fuel cellular activities.

The central vacuole is a large

organelle

that is found in the cells of plant/algae cells, but not in animal cells.

It has a range of important functions such as storing nutrients, maintaining cell turgidity, and aiding in cell growth and division.

Centrioles are organelles found in animal cells, but not in plant/algae cells. They are small cylindrical structures that are composed of nine sets of microtubules arranged in a ring.

They are involved in the formation of the mitotic spindle during cell division, as well as in the organization of the cell's cytoskeleton.

A cell membrane, chloroplast, central vacuole, and centriole are found in different cells. The cell membrane is found in all cells, while the chloroplast, central vacuole, and centriole are only found in specific cells.

The chloroplast is found in plant/algae cells, the central vacuole is found in plant/algae cells, and the centriole is found in animal cells.

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The value of actual machine advantage (MA) is 2, velocity ration (VR) is 2.5 and efficiency η is 80%.

Calculation:

It is given that the radius of the wheel is 50 cm, radius of axle is 20 cm, load is 2000 N and effort is 1000 N.

Let, R = 50 cm

r = 20 cm

L=  2000 N

E = 1000 N

We have to calculate actual machine advantage, velocity ratio and efficiency.

We know that,

       MA=L/E

             =2000/1000

              =2

        VR=R/r

             =50/20

             =2.5

         η=(MA/VR)*100

           =(2/2.5)*100

           =(0.8)*100

           =80%

Since your question is incomplete, your complete question might be

"In a wheel and axel, the radius of the wheel is 50cm and that of the axel is 20 cm. If a load is 2000n is lifted by applying an effort of 1000n,calculate ma, vr and η."

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The nucleus contains the DNA and acts like a control center of the cell.

When a person moves from a sitting position to a standing position, blood pressure increases within a few minutes systolic and diastolic  movement  cause this.

The blood vessel pulse drops when one actions from recumbent to standing. Orthostatic hypotension is characterized as a drop in systolic pulse (SBP) of something like 20 mm Hg or a drop in diastolic circulatory strain (DBP) of no less than 10 mm Hg in no less than 3 minutes subsequent to standing.

At the point when an individual's pulse out of nowhere drops in view of an adjustment of position, it is known as orthostatic hypotension. Gravity influences the vascular framework in the wake of standing up from a sitting position or from a laying position, decreasing how much blood getting back to the heart and making blood pool in the leg.

Pulse is the tension of the blood in the human circulatory framework, which is connected with the pace of the heartbeat and the pace of siphoning of the blood in body parts or organs. Gravity impacts the human body. For instance, Veins in our legs neutralize gravity to siphon the blood back to the heart.

Gravity, or gravitational power, is the power of fascination between any items in the universe. Earth's gravity comes from all its planet mass. All its mass makes a consolidated gravitational draw on all the mass in your body. Gives you weight that.

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Answer:

Vestigial organs show traits that a species once needed to have to perform certain tasks

Explanation:

B. Vestigial organs provide evidence for the theory of evolution:

"Vestigial organs show traits that a species once needed to have to perform certain tasks."

What do you mean by vestigial organs?

"Vestigial organs are the organs that have no apparent function and are considered to be the residual parts from the past ancestors."

What is theory of evolution?

"Theory of evolution is a scientific theory of the origin of species of plants and animals."

What do you mean by species?

"A species is often defined as a group of organisms that can reproduce naturally with one another and create fertile offspring."

What is a trait?

"A trait, as related to genetics, is a specific characteristic of an individual."

How are vestigial organs related to theory of evolution?

"Vestigial organs are often homologous to organs that are functioning normally in other species. Therefore, vestigial organs can be considered evidence for evolution, the process by which beneficial heritable traits arise in populations over an extended period of time."

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One way that cell phone technology may not be beneficial in this situation is that Timothy may not have cell phone service in some areas. Timothy may not have cell phone service in some areas.

What is cell phone technology?

Cellular communication is facilitated by mobile technology. Over the last few years, mobile technology has advanced rapidly. Since the turn of the millennium, a standard mobile device has evolved from a simple two-way pager to a mobile phone, GPS navigation device, embedded web browser and instant messaging client, and handheld gaming console. Many experts believe that mobile computing and wireless networking are the future of computer technology.

Tablet computers are becoming increasingly popular for mobile computing. Tablets are available on 3G and 4G networks. Mobile technology has different meanings in different contexts, most notably mobile technology in information technology and mobile technology in basketball technology.

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Answer:

Strenuous exercise has caused her body to be in oxygen debt, and she is breathing hard while lactate is transported to the liver. This is a result of anaerobic respiration

Explanation: Anaerobic cellular respiration occurs and due to the lack of oxygen she takes deeper breaths. That way, there's oxygen in the muscles while respiration occurs.

Answer:

Frida is lacking air, or oxygen, because of her exercising. She starts panting quickly to take in air faster and make up for the oxygen loss. The heart beats hard during exercise, and needs oxygen to return to a normal pace

The arrangement of circles taht best illustrates the relationship between the genus and species of Canis familiaris, the domestic dog is Option 1 where familiaris is a subset of Canis.

Genus and species are terms used in the scientific classification of living organisms, also known as taxonomy.

A genus is a taxonomic rank used to group together closely related species. It is a level of classification above species and below family. Organisms within the same genus share many similarities in their characteristics, such as their physical features, behavior, and genetic makeup.

A species is the basic unit of classification in biology. It is a group of organisms that share common characteristics and can interbreed to produce fertile offspring. Each species is given a unique two-part scientific name, consisting of its genus name and its species name, such as Homo sapiens for humans or Canis lupus for wolves.

Together, genus and species names form what is called a binomial or scientific name, which is used to refer to a specific organism.

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Answer:

thwy are made out of organisms and genetics

Answer:

Proteins and DNA organized into genes

Explanation:

Reduced precipitation lead to limited water availability in such a way that (D). reduced precipitation may lead to drought.

Precipitation can be defined as any form of water either liquid or solid that is formed in the atmosphere and falls down to the earth as rain, snow, hail and sleet.

Precipitation is one of the major part in the global water cycle.

Precipitation is so important because it tends to determine the amount of water that is on earth and in the atmosphere.

In conclusion, Reduced precipitation lead to limited water availability in such a way that reduced precipitation may lead to drought.

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True. About 3 liters of fluid are lost to the tissue spaces every 24 hours and are returned to the bloodstream as lymph.

This process is an important part of the immune system, as the lymphatic system plays a crucial role in fighting infections and diseases. The lymphatic system is a network of vessels and tissues that help to remove waste and other harmful substances from the body. When fluid leaks out of blood vessels into the surrounding tissues, it is collected by the lymphatic vessels and transported back to the bloodstream as lymph.

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Answer: In the taxonomy of Linnaeus there are three kingdoms, divided into classes, and they, in turn, into orders, genera (singular: genus), and species (singular: species), with an additional rank lower than species. a term for rank-based classification of organisms, in general.

Answer:

Linnaeus divided plants as vegetabilia

and animals as Animalia...

hope it helps you...

The sampling method being used when dividing the population into categories by age and gender, and then randomly selecting a sample from each category is stratified random sampling.

 What is stratified random sampling? Stratified random sampling is a sampling method in which the population is divided into subgroups, known as strata, and random samples are drawn from each stratum. This method is used to ensure that the sample obtained is representative of the population, particularly when the population has distinct subgroups that vary significantly from one another.

In stratified random sampling, each stratum is treated as a separate population and a sample is taken from each stratum. This ensures that each subgroup is well-represented in the sample. The steps involved in stratified random sampling are as follows: Divide the population into strata based on a particular characteristic (e.g. age, gender, income level, etc.).

Determine the sample size required for each stratum, based on the proportion of the population in each stratum. Select a random sample from each stratum. Combine the samples from each stratum to obtain the final sample.

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These two molecules are two nuclide acids namely DNA and RNA.

When nucleic acid is naturally occurring, it may be broken down into phosphoric acid, sugars, and a variety of organic bases (purines and pyrimidines). Because they control the creation of proteins, nucleic acids—the primary information-carrying molecules of the cell—determine the inherited traits of every living creature. Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) are the two primary types of nucleic acids .

All free-living creatures and the majority of viruses have genetic material made up of DNA, which is the ultimate life plan. RNA is the genetic material of certain viruses, but it is also present in all living cells and is crucial to many biological activities, including the synthesis of proteins.

Therefore, the two molecules described are RNA and DNA.

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False. Human skin color variations don't automatically carry a "good" or "bad" value judgement.

The skin color is nothing but just a biological trait and nothing else that is just a result of the interaction between the different variation causing variables. Certain skin tones have historically been connected with value judgements due to the social construct of race and related prejudices, although these judgements are not founded in actual scientific data.

The amount and kind of melanin pigment generated by specialized skin cells called melanocytes determines the color of human skin. The melanin production depends heavily on the environmental factor which ultimately leads to the different skin color.

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Answer:

One unique situation in which an experiment could be used to test a hypothesis about evolution is studying the evolution of antibiotic resistance in bacteria.

Explanation:

Hypothesis: Exposure to antibiotics will lead to the evolution of antibiotic resistance in bacteria populations.

Experiment:

Start with a culture of bacteria that is susceptible to a specific antibiotic.

Divide the bacteria into two groups: a control group and an experimental group.

In the experimental group, expose the bacteria to gradually increasing concentrations of the antibiotic over multiple generations.

In the control group, maintain the bacteria in a controlled environment without exposure to the antibiotic.

Monitor and measure the growth and survival of both groups over several generations.

Regularly sample bacteria from both groups and test their susceptibility to the antibiotic.

Compare the results between the control and experimental groups to determine if the experimental group has developed antibiotic resistance over time.

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The fossil record for Cenozoic mammals is so well preserved because b. Cenozoic-aged rocks are widespread in western North America.

The Age of Mammals represents a term that is frequently used to refer to the Cenozoic era, which started around 66 million years ago and is still going on now. Mammals had a period of rapid diversity during this time and emerged as the major terrestrial animals. For a number of reasons, the fossil record of Cenozoic animals is in good condition.

One of the key causes is the extensive presence of rocks from the Cenozoic era in various regions of the planet, notably western North America, which is home to several significant fossil sites. The fossils are not as ancient as those from older geological eras, which can be harder to uncover and may have seen greater deterioration through time. This is because the age is geologically recent.

Complete Question:

The fossil record for cenozoic mammals is so well preserved because

a. few other types of organisms lived during this time

b. cenozoic-aged rocks are widespread in western north america

c. there were many meteorite impacts in the cenozoic, which buried organisms

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