\(2 \frac{1}{3} + 3 \frac{5}{7} \)
​

The X of the angle <CDB represented as 7X is = 5.86.

From the diagram, line BD divides triangle ∆ ADB into two identical triangles.

Triangle ∆ ABD = triangle ∆ CBD

Notice that < ADC = an acute angle which is = 90°; and

<ADC = < ADB + < CDB

But , < ADB= 49° and < CDB = 7x

90° = 49 + 7x

Make 7x the subject of formula,

7x = 90-49

7x = 41

X =41/7

X = 5.86

Therefore, X = 5.86.

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Forest deterioration and deforestation are the two major environmental concerns with this continual loss of primary forest land.

Forests are home to more than 75% of all land-based life. Forests are crucial to halting climate change because they act as a carbon sink, absorbing carbon dioxide that would otherwise be released into the atmosphere and cause a continuous change in weather patterns. The threats include forest deterioration and deforestation. Illegal logging is the main cause of forest degradation, while agriculture is the main cause of deforestation (although poorly planned infrastructure is also evolving into a substantial risk factor). Deforestation in tropical rain forests is particularly concerning because they are the natural habitat for much of the world's species. For instance, over the past 50 years, the Amazon has lost 17% of its forest due mostly to forest conversion for cattle grazing, highways etc.

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The answer is B.

Reason:

The Aleutian Arc volcanism is the result of the active subduction of the Pacific Plate beneath the North American Plate.

Answer: Hello!

The region is affected by a subduction zone, the region may have active volcanoes, and that the region is close to a convergent boundary. From the map it can be seen that the region is close to the continents, therefore, it is possible that there is the boundary of tectonic plates surrounding it. One can also see the presence of islands, thus, it is quite possible that there lies a subduction zone close to them. This also demonstrates that the boundary is convergent, as transform boundaries do not result in elevation. Close to the convergent boundaries, one can witness recurrent volcanoes and shallow earthquakes.

Explanation:

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Explanation

The terrestrial carbon cycle with the major processes mediated by soil microorganisms adapted from Prosser125. Microbial necromass and metabolites are the precursors for stable soil organic matter while extracellular microbial carbon may also influence the stability of soil organic carbon SOC.

Answer:

The answer is D

The range of frequencies that humans can hear relatively soft (low energy) sounds is typically between 20 Hz to 20,000 Hz. This range is commonly known as the audible frequency range. However, it's important to note that the ability to hear sounds within this range varies from person to person, and can also be influenced by age, gender, and other factors.

At the lower end of the audible frequency range, sounds with frequencies below 20 Hz are known as infrasound, and are often felt more than heard. On the other end, sounds with frequencies above 20,000 Hz are known as ultrasound, and are also beyond the range of human hearing.

The ability to hear different frequencies within the audible range is due to the complex mechanisms of the human ear. Sound waves are captured by the outer ear, which then travel through the ear canal and vibrate the eardrum.

This vibration is transmitted through a series of tiny bones in the middle ear and ultimately reaches the cochlea in the inner ear. Here, specialized hair cells are stimulated by different frequencies of sound, which send electrical signals to the brain for processing.

Overall, the range of frequencies that humans can hear relatively soft sounds is a crucial aspect of our ability to perceive and communicate through sound.

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The symptoms of stress are associated with both the Alarm Reaction and the Stage of Resistance.

The body's response to stress involves multiple stages, including the Alarm Reaction and the Stage of Resistance. During the Alarm Reaction, the body releases stress hormones such as adrenaline and cortisol, leading to various physiological changes.

Symptoms such as increased heart rate, sweating, and heightened alertness are associated with the immediate response to stress. As the stress continues, the body enters the Stage of Resistance, where it attempts to adapt and cope with the ongoing stressor.

This stage is characterized by the activation of various hormonal and physiological mechanisms, including increased levels of aldosterone, antidiuretic hormone (ADH), and angiotensin. These changes help regulate blood pressure, fluid balance, and electrolyte levels.

Symptoms such as increased water retention and elevated blood pressure can be observed during this stage.

In summary, the symptoms of stress are influenced by both the immediate response (Alarm Reaction) and the long-term adaptation (Stage of Resistance) to stressors.

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Answer:

The ecosystem will change, maybe, there might be some problems, like some animals will start to die by being food for the alien species, or it might progress more.

Explanation:

Answer:

Explanation:

calvin cycle

The distinguishing characteristics of veins include valves to ensure one-way movement of blood so the correct answer is an option (B).

The circulatory system is responsible for the transportation of blood throughout the body. Blood is carried through the circulatory system by blood vessels, including arteries, veins, and capillaries. Veins and arteries are both crucial components of the circulatory system. However, they differ in their structure, function, and other characteristics.Veins have certain characteristics that set them apart from arteries. One of the most distinguishing features of veins is their valves. The valves prevent the backflow of blood and ensure that blood moves in only one direction, towards the heart. Veins are responsible for carrying deoxygenated blood back to the heart.

They typically have thinner walls than arteries. Veins also have less elastic tissue and smooth muscle tissue than arteries. Instead, they rely on skeletal muscle contractions and pressure changes within the thoracic cavity to help propel blood towards the heart. The larger lumen of veins also allows them to accommodate a higher volume of blood.

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Yes, it is critical to understand the effect of fungal agent on case.

Determining the fungal agent contributing to a specific case can be critical in many situations. Here are some reasons why it is important:

Treatment: Different fungal agents may respond differently to antifungal medications. Identifying the specific fungal species allows healthcare professionals to prescribe the most effective treatment options.

Prognosis: Knowing the specific fungal agent can provide insights into the severity and potential complications of the infection.

Antifungal resistance monitoring: Identifying the fungal species contributing to a case allows for monitoring and surveillance of antifungal resistance patterns.

However, it's important to note that there may be cases where determining the specific fungal agent may not be critical. For example, in certain cases of mild fungal infections that respond well to broad-spectrum antifungal medications, identifying the exact species may not significantly impact the treatment outcome. Nonetheless, in many clinical scenarios, determining the fungal agent involved can have important implications for patient care and management.

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Based on the given information, we can analyze the effectiveness of bare metal stents compared to drug-coated stents in terms of retreatment rates. So as per the given information the P-value is 0.151.

To determine if the proportion of patients needing retreatment is lower for those who received drug-coated stents, we can conduct a hypothesis test using the given sample proportions and the P-value method with a significance level of α=0.05.

The null hypothesis (H₀) states that there is no difference in the proportion of patients needing retreatment between bare metal stents and drug-coated stents (p₁ = p₂). The alternative hypothesis (H₁) states that the proportion of patients needing retreatment is lower for drug-coated stents (p₁ > p₂).

By performing the hypothesis test and calculating the P-value, we can assess whether the observed data provides enough evidence to reject the null hypothesis in favor of the alternative hypothesis. The TI-84 Plus calculator can be used to calculate the P-value, which will help determine the statistical significance of the results.

For the group with bare metal stents:

n₁ = 5314 (total patients with bare metal stents)

X₁ = 832 (patients needing retreatment with bare metal stents)

p₁ = X₁ / n₁

For the group with drug-coated stents:

n₂ = 1119 (total patients with drug-coated stents)

X₂ = 140 (patients needing retreatment with drug-coated stents)

p₂ = X₂ / n₂

We can calculate the test statistic using the formula:

z = (p₁ - p₂) / sqrt(p(1 - p)(1/n₁ + 1/n₂))

where p = (X₁ + X₂) / (n₁ + n₂)

so the P-value is 0.151.

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The offspring produced by the cross of two orange-fruited plants producing a mix of orange, red, and yellow fruit is an indication of the presence of multiple alleles controlling fruit color.

Alleles are different versions of a gene, and in this case, the parents are likely heterozygous for the gene-controlling fruit color, meaning they have two different alleles.

The parent plants could have the genotype RrO, where R is the dominant allele for red fruit color, r is the recessive allele for yellow fruit color, and O is the dominant allele for orange fruit color. When these heterozygous plants are crossed, the offspring have a 50% chance of inheriting the RrO genotype, which results in orange fruit, and a 25% chance each of inheriting the Rr and rrO genotypes, which result in red and yellow fruit, respectively.

This pattern of inheritance demonstrates how offspring can display traits that are different from their parents when they inherit different combinations of alleles. The mixing of alleles through sexual reproduction results in genetic diversity, which can increase the survival chances of populations in changing environments.

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The attributes that would allow a cell to be larger are ; options ( A and B )

The size of a cell depends mostly on the surface area to volume ratio of the cell and the smaller a cell the more efficient the cell would be . while

The surface area of a cell is dependent on the shape of the cell and not the branching of the cells because the surface area of a cell can only be calculated using the shape of the cell.

Hence we can conclude that the attributes that would allow a cell to be larger are ; perfectly round and perfectly cube-shaped.

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Answer:

As the sweat evaporates off your skin, you cool down. Sweat is a great cooling system.

Explanation:

Answer: When the sweat hits the air, the air makes it evaporate (this means it turns from a liquid to a vapor). As the sweat evaporates off your skin, you cool down. Sweat is a great cooling system, but if you're sweating a lot on a hot day or after playing hard you could be losing too much water through your skin.

Explanation: Have a great day!!!

Scientists found that the first living things were likely prokaryotic because eukaryotic are evolved from the prokaryotic only.

Natural selection may be defined as favorable variations that assist the organisms to survive and reproduce in a particular habitat.

Individuals that are better suited to their environment are likely to have more offspring and pass their genetic material on to future generations. This theory is referred to as Natural selection.

Scientists hypothesize that oxygen began to accumulate in the Earth's atmosphere after the appearance of living things with the ability to Photosynthesize.

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Answer:

The answer is B: All offspring had yellow peas.

Explanation:

:)

The brain and spinal cord are parts of the central nervous system, while the nerves and all the sensory receptors and motor neurons are part of the peripheral nervous system.

The brain is divided into two hemispheres: the left hemisphere and the right hemisphere. These two hemispheres are connected by a network of nerve fibers located in the brain’s center called the callosum (the brain’s central nervous system). Each of the four hemispheres is divided into four lobes (or sections), all of which are connected to each other. The CNS is responsible for cognitive functions such as thinking, reasoning, emotion, language, and movement.

The peripheral nervous system can be broken down into two sub-systems: the Autonomic (ANS) and the Somatic (SNS) nervous system. The Autonomic Nervous System controls voluntary bodily functions and controls glands. The Somatic Nervous System (SNS) controls muscle movement and sends signals from the ears, eyes, skin, and other parts of the body to the centrally located nervous system.

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Answer:

Explanation:

Insects reproduce sexually, with the male producing sperm and the female producing eggs. The sperm is transferred to the female during mating, and fertilization occurs inside the female's body. The eggs are then laid, and the offspring develop from the fertilized eggs through various stages such as eggs, larvae, pupae, and finally into adult insects. The exact process can vary between different species of insects, but this general process is the same for many insects.

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Answer:

Insects reproduce sexually, with the male and female mating to produce offspring. The process of reproduction in insects generally involves the following steps:

Courtship: Male insects often engage in courtship behaviors to attract a mate, such as displaying colorful markings, producing pheromones, or performing specific dances.

Mating: Once a female insect is attracted to a male, they will mate. During mating, the male transfers his sperm to the female's reproductive tract using his reproductive organs, known as genitalia.

Fertilization: After mating, the sperm travels to the female's eggs, where fertilization occurs. In some insects, the eggs are fertilized internally, while in others, the eggs are fertilized externally.

Oviposition: Once the eggs are fertilized, the female insect will lay them, a process known as oviposition. This can occur on a variety of surfaces, including leaves, stems, or even in the soil.

Development: After the eggs are laid, they will hatch into larvae, which will undergo several molts as they grow and develop. Some insects will go through a pupal stage before emerging as adults, while others will go through a direct development, bypassing the pupal stage.

Metamorphosis: In insects that go through a pupal stage, they will undergo a complete metamorphosis, where they change from a larva to an adult in a process that involves dramatic changes in their body structure and behavior.

Overall, the process of reproduction in insects is highly varied and depends on the specific species of insect. However, the basic steps described above are typical for many insects and demonstrate the unique ways in which insects reproduce and perpetuate their species.

Explanation:

Answer:

c

Explanation:

Hubble's brilliant observation was that the red shift of galaxies was directly proportional to the distance of the galaxy from earth. That meant that things farther away from Earth were moving away faster. In other words, the universe must be expanding.

Companies are taking proactive steps to manage ecological challenges by adopting sustainable practices, supporting conservation efforts, developing green technologies, emphasizing CSR, and engaging in collaborations.

In an effort to manage ecological challenges, many companies are implementing various strategies and initiatives. Some of these include:

1. Sustainable Practices: Companies are adopting sustainable practices to minimize their impact on the environment. This can involve reducing carbon emissions, optimizing resource usage, implementing recycling programs, and adopting renewable energy sources.

2. Environmental Conservation: Companies are actively participating in environmental conservation efforts. This may include supporting wildlife preservation, protecting natural habitats, and investing in reforestation projects.

3. Green Technologies: Many companies are developing and implementing green technologies to address ecological challenges. This can involve the use of clean energy technologies, developing eco-friendly products, and investing in research and development of sustainable solutions.

4. Corporate Social Responsibility (CSR): CSR initiatives are becoming increasingly important for companies. They are engaging in philanthropic activities, supporting environmental organizations, and integrating sustainability into their business models.

5. Collaboration and Partnerships: Companies are partnering with environmental organizations, NGOs, and government agencies to collectively address ecological challenges. Collaboration allows for shared resources, expertise, and a collective approach to finding solutions.

Overall, companies are taking proactive steps to manage ecological challenges by adopting sustainable practices, supporting conservation efforts, developing green technologies, emphasizing CSR, and engaging in collaborations. These efforts are crucial for achieving environmental sustainability and ensuring a healthier planet for future generations.

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Answer:

   well cutting down trees  using  chemicals burning foccle fules

Explanation:

Enzymes that break a bond through a reaction with water are called hydrolases.

Hydrolases are a type of enzyme that catalyze hydrolysis reactions, which involve breaking a chemical bond by adding a water molecule. Hydrolysis reactions occur when a water molecule is split into a hydrogen ion (H+) and a hydroxide ion (OH-), and these components participate in the cleavage of the bond.

Hydrolases play a crucial role in various biological processes by breaking down complex molecules into smaller components through hydrolysis. They are involved in the digestion of food, cellular metabolism, and the recycling of biomolecules within cells.

Examples of hydrolases include proteases, which break down proteins by cleaving peptide bonds, lipases, which break down lipids by hydrolyzing ester bonds, and carbohydrates, which break down carbohydrates by hydrolyzing glycosidic bonds.

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Answer:

C) They respond to pressure, movement, and tension.

Explanation:

Mechanoreceptors are a type of somatosensory receptors which relay extracellular stimulus to intracellular signal transduction through mechanically gated ion channels. The external stimuli are usually in the form of touch, pressure, stretching, sound waves, and motion.

Answer:

(1) the steam from the hot water will make the balloon rise up

(2)  When hot and cold are in thermal contact, they exchange heat energy until they reach thermal equilibrium

Explanation:

In translation, the structures involved include ribosomes and transfer RNA (tRNA). The molecules involved are messenger RNA (mRNA), which carries the genetic information, and amino acids, which are the building blocks of proteins. The ribosome reads the mRNA and the tRNA brings the corresponding amino acid to the ribosome. The amino acids are then joined together to form a protein. A diagram of this process would show the ribosome with the mRNA and tRNA present, and the amino acids being linked together to form a protein.

Translation is the process by which the information in mRNA is used to synthesize proteins. The main structures involved are the ribosome, mRNA, tRNA, and amino acids. The ribosome is a complex molecular machine that serves as the site for protein synthesis. mRNA contains the genetic information in the form of codons, which are read by the ribosome during translation. tRNA molecules have an anticodon region that pairs with the mRNA codons, and each tRNA carries a specific amino acid. As the ribosome reads the mRNA, it connects the amino acids carried by tRNAs, forming a polypeptide chain, which eventually becomes a functional protein.

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Answer: ACGGUA

Explanation: In mRNA, Adenine goes to Uracil and Cytosine goes to Guanine.

If it was asked to translate the DNA base sequence, Adenine would normally correspond with Thymine.

Answer:

c. Vaccination

Answer:

D. Vaccination.

Explanation:

Vaccination is a preparation that teaches the immune system to recognise a disease-causing agent without actually causing disease is termed a vaccination.

For example:

The coronavirus vaccine won't expose us to the coronavirus yet the it helps the immune system prepare to fight the virus in advance just in case the person gets infected with the disease.

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