Name a blood disease that shows too many red blood cells

Answer:

Increasing the alveolar ventilation rate will increase the partial pressure of oxygen in the alveoli.

Explanation:

Alveolar Ventilation rate is the rate of air flow in the alveoli of the lung during normal breathing. It is measured in milliliters of air per minute (mL/min). The alveolar ventilation rate is an important factor in determining the concentrations (partial pressures) of oxygen and carbon dioxide in the functioning alveoli.

A high rate of alveolar ventilation, would result in a rapid influx of oxygen-rich air and efflux carbon dioxide-filled air from the alveoli.  This ultimately results in an increase in the concentration of oxygen and a decrease in the concentration of carbon dioxide within the alveoli.

Effects of alveolar ventilation on partial pressures of alveolar carbon dioxide and oxygen (PACO₂ and PAO₂)

If the  alveolar ventilation rate is increased (and carbon dioxide production is unchanged), then the partial pressure of carbon dioxide in the alveoli, PACO₂ will decrease.

If the  alveolar ventilation rate increases, then the partial pressure of oxygen in the alveoli, PAO₂ will increase.

Natural selection passes on advantageous genetic changes that help an individual survive. As a result, a new generation of organisms is born, with a higher chance of surviving and reproducing.

Boundelaireasnia; hope it helps.. ^_^

Answer:

This shows that once animals were on the surface there were plants for them to eat.

Dinosaur fossils show up only in layers above or with plant fossils. This shows that dinosaurs were animals that lived with plants and feed on plants.

Fossils are the remains of plants, animals, and other substances that are preserved under the layers of rocks and earth. They are the preserved form that gives the knowledge of organism present in before times.

Dinosaurs lived 65 million years ago, but still, their bones and remains are found on earth. They were found with the fossils of plants, so this tells us that plants were also present at the time of their presence, and they fed on plants.

Thus, only strata above or in conjunction with plant fossils do dinosaur fossils appear. This demonstrates that dinosaurs were also plant-eating and lived with plants.

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Answer:

the first one creates genetic variation that aides in evolution

Explanation:

aides means like help and so asexual reproduction does not help in evolution because the organism is only making the same copy of itself

If the ventral root of a spinal nerve was severely damaged or cut, it would cut off the pathway of motor information from the spinal cord to the spinal nerve. Therefore, whatever effectors that spinal nerve controlled would no longer work; it would be paralyzed.

The tons of toxic fly ash generated by coal-fired power plants are made up of all of the following EXCEPT sulfates. Therefore the correct option is option C.

Chemical substances containing the sulphate ion (SO4 2-), which is made up of sulphur and oxygen atoms, are referred to as sulphates or sulphates. Minerals, salts, and detergents are just a few examples of the natural and manufactured sources of sulphate.

Sulfates are frequently employed as foaming agents, surfactants, and emulsifiers in the context of personal care and cosmetic goods in order to help produce lather and cleanse the face or hair.

Sodium lauryl sulphate (SLS) and sodium laureth sulphate are typical instances of sulphates used in personal care products. (SLES).  Therefore the correct option is option C.

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Answer:

Evidence on the health effects of total polyunsaturated fatty acids (PUFA) is equivocal. Fish oils are rich in omega‐3 PUFA and plant oils in omega‐6 PUFA. Evidence suggests that increasing PUFA‐rich foods, supplements or supplemented foods can reduce serum cholesterol, but may increase body weight, so overall cardiovascular effects are unclear.

Objectives

To assess effects of increasing total PUFA intake on cardiovascular disease and all‐cause mortality, lipids and adiposity in adults.

Search methods

We searched CENTRAL, MEDLINE and Embase to April 2017 and clinicaltrials.gov and the World Health Organization International Clinical Trials Registry Platform to September 2016, without language restrictions. We checked trials included in relevant systematic reviews.

Selection criteria

We included randomised controlled trials (RCTs) comparing higher with lower PUFA intakes in adults with or without cardiovascular disease that assessed effects over 12 months or longer. We included full texts, abstracts, trials registry entries and unpublished data. Outcomes were all‐cause mortality, cardiovascular disease mortality and events, risk factors (blood lipids, adiposity, blood pressure), and adverse events. We excluded trials where we could not separate effects of PUFA intake from other dietary, lifestyle or medication interventions.

Data collection and analysis

Two review authors independently screened titles and abstracts, assessed trials for inclusion, extracted data, and assessed risk of bias. We wrote to authors of included trials for further data. Meta‐analyses used random‐effects analysis, sensitivity analyses included fixed‐effects and limiting to low summary risk of bias. We assessed GRADE quality of evidence.

Explanation:

Answer:

The completion digestion of food occurs primarily in the small intestine. After partially digested food passes from the stomach to the small intestine, it undergoes further breakdown and absorption of nutrients.

The small intestine is the main site for enzymatic digestion and nutrient absorption in the digestive system. It has specialized structures called villi and microvilli that increase the surface area for efficient absorption.

Enzymes secreted by the pancreas and the small intestine itself, such as lipase, amylase, and proteases, further break down complex molecules into simpler forms for absorption into the bloodstream.

The small intestine plays a crucial role in the final stages of digestion and nutrient absorption in the human body.

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Answer:

7.5056365964E-24 Moles

Explanation:

Limiting factors are the biotic and abiotic environmental elements that model a species population size affecting their carrying capacity. They might be density dependent or density independent. A) Decreases because the number of predators increases.

Limiting factors are all the environmental elements, biotic and abiotic, that act directly on populations and individuals, limiting their distribution and growth.

Limiting factors might be either

These factors affect the carrying capacity, influencing on natality and mortality rate, migration, etcetera.

In the exposed example, alligators and insects are density dependent biotic limiting factors, meaning they affect the frogs population size.

In the image, we can see that from year 1 to year 5,

So, the significant increase in predation rate (due to the increase in the alligator population) means a direct decrease in the frog population size, even if they have available food.

The correct option is A) frogs population will decreases because the number of predators increases.

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Answer:

Social opinion can help pass laws regulating scientific practices.

Explanation:

It's true

The Mendelian inheritance principles are called the Law of Segregation, the Law of genetic Dominance and the Law of Independent Assortment.

The Mendelian genetic inheritance principles are a series of laws that dominate genetic patterns of inheritance which were discovered by Gregor Mendel who investigated inheritance in pea plants.

The Law of Segregation indicates that alleles separate in different gametes when they are not linked, and the law of dominance indicates that certain alleles mask the expression of recessive alleles in heterozygous individuals. Moreover, the Law of Independent Assortment is based on genes that are located on different chromosomes.

Therefore, with this data, we can see that the Mendelian genetic inheritance principles are fundamental to understanding inheritance patterns and they were discovered by Gregor Mendel working with different traits in the pea plant.

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The colonial hypothesis of animal origins would be more attractive because the colonial hypothesis posits that animals evolved from colonial protists.

The colonial hypothesis is a theory of animal evolution that proposes that animals evolved from colonial protists. A colonial protist is an organism made up of a group of genetically identical cells that function as a single unit. The cells in a colonial protist are held together by a common extracellular matrix and are able to divide and differentiate in order to perform different functions. According to the colonial hypothesis, animals evolved from colonial protists through a process of specialization and integration of cells.

The cells in the colonial protist became specialized for different functions and became more integrated with one another, eventually giving rise to the complex multicellular animals we see today. The colonial hypothesis is one of several theories that have been proposed to explain the evolution of animals, but it is not widely accepted by the scientific community.

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The usage of synthetic plant hormones for the modification of plant growth can have environmental implications.

Factors to consider

1. Ecotoxicity: Synthetic plant hormones, if not properly regulated or used in excessive amounts, can pose risks to non-target organisms and ecosystems. They may affect the growth and development of other plants, beneficial insects, and microorganisms, potentially disrupting ecological balance.

2. Soil and Water Contamination: Improper application or disposal of synthetic plant hormones can lead to soil and water contamination. Runoff from treated fields or improper disposal of unused hormones may introduce these compounds into water bodies, potentially affecting aquatic organisms and overall water quality.

3. Resistance and Persistence: Repeated and excessive use of synthetic plant hormones can contribute to the development of resistance in target plant species. This can lead to the evolution of herbicide-resistant weed populations, requiring higher doses or different chemicals to achieve the desired effect. Moreover, some synthetic hormones may persist in the environment for extended periods, potentially impacting subsequent crops or natural vegetation.

4. Non-target Effects: Synthetic plant hormones may influence the growth and development of unintended plant species, leading to unintended consequences such as changes in biodiversity, alteration of natural plant communities, or interference with the natural ecological succession.

5. Human Health Concerns: The potential impacts of synthetic plant hormones on human health are an area of ongoing research. While these hormones are generally considered safe for use in agriculture when used according to regulations, there may be concerns related to exposure, residues, or indirect effects on food quality and safety.

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Answer:

the chloroplast

Explanation:

Photosynthesis takes place in the chloroplast, a specialized intracellular organelle found in plants and algae, which emerged considerably later. During the day, photosynthesis is carried out by chloroplasts. The photosynthetic cells employ NADPH and ATP, the direct results of photosynthesis, to make a variety of chemical compounds.

Answer:

Explanation:

1 and 5

Answer:

refrigerator

backpack

wooden door

this is because clear plastic and clear glass and transparent/ translucent and therefore light passes through it not forming a shadow.

A shadow is ONLY formed if light is blocked by an object etc.

Answer:

True

Explanation:

Studies have shown that intraspecific competition can change poopulation size over time. The experiments suggested that competing species cannot live together, because the best competor will exclude the other competing species.

Hope that helped.

Answer:

True

Explanation:

Hope it will help you...

A very dry region is used to grow plants.

D) regions that are very dry

The binomials for the length and width (4x - 5) and (3x + 3) respectively.

The length of the short side is 12, option C.

Factor the area of the rectangle as:

12x² - 8x - 15 = (4x - 5)(3x + 3)

The binomials (4x - 5) and (3x + 3) represent the length and width of the rectangle, but to determine which is which. Since the length is usually greater than the width, we can see that (4x - 5) represents the length and (3x + 3) represents the width.

To find the length of the short side when x = 4, we can substitute 4 for x in the expression for the width:

3x + 3 = 3(4) + 3 = 12

Therefore, the length of the short side when x = 4 is 12.

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This is an example of exponential growth.

Exponential growth refers to a pattern of growth where the quantity or size of something increases at an accelerating rate over time.

In the given scenario, Brain has one son, two grandchildren, and three great-grandchildren.

Each generation is producing more offspring, resulting in a rapidly increasing number of descendants.

The progression from one generation to the next demonstrates exponential growth because each subsequent generation adds more individuals than the previous one.

As the generations continue, the number of descendants grows exponentially larger.

Exponential growth can be observed in various natural and human-made systems, such as population growth, compound interest, and the spread of infectious diseases.

In this case, the number of descendants in Brain's family tree follows an exponential pattern, as each new generation multiplies the number of offspring, leading to a significant growth rate.

Therefore, the example given aligns with the concept of exponential growth.

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Answer:

answer d

Explanation:

DNA provides instructions for building the heart

The way that looking at the carbon footprint or water footprint similar to looking at a biomass, energy, or numbers pyramid is that indicates how much energy is stored as new biomass at each trophic level, and a pyramid of biomass shows how much biomass is stored as new biomass overall.

Of all energy sources, biomass energy has the fourth-highest carbon footprint. On a life-cycle basis, biomass fuel emits 230 grams of carbon dioxide (CO2) for every kWh produced. It is not as advantageous as it might seem, it contributes to climate change, and has other detrimental environmental repercussions.

Therefore, note that at higher trophic levels, organisms are often greater in size, but because there are fewer of them, there is less biomass produced. The total mass of all trophic level creatures is known as biomass.

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The most likely explanation for the decrease in the density of gas particles in a section of Earth's atmosphere is that the air pressure in that section of the atmosphere decreased.

Density is defined as mass per unit volume. In the case of a gas, density is directly related to the number of gas particles (molecules or atoms) present in a given volume. When the air pressure decreases, it means that there are fewer gas particles exerting force per unit area. As a result, the density of gas particles in that section of the atmosphere decreases.

Air pressure is the force exerted by the gas particles on the walls of the container or the surroundings. It is influenced by several factors, including temperature, altitude, and the presence of other gases. Changes in these factors can cause fluctuations in air pressure. For example, if there is a decrease in temperature, the gas particles lose kinetic energy, which leads to decreased pressure and density.

It is important to note that the total number of gas particles in Earth's atmosphere does not necessarily change significantly over short periods of time. The atmosphere is composed of a vast number of gas molecules, and while there may be variations due to natural processes, such as volcanic eruptions or biological activities, these changes are relatively small compared to the overall composition of the atmosphere.

Therefore, the most likely explanation for the decrease in density of gas particles in a section of Earth's atmosphere is a decrease in air pressure, which can occur due to various factors such as weather systems, changes in altitude, or movement of air masses.

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A description of the compost bin that can be used for this experiment is that the bin is a rectangle-shaped container that is made of wood. This container is 150 cm wide and 30 cm deep. It can hold up decaying materials for up to one month.

The compost can be used to store decaying materials that will be used in a nearby farm for manure. Composting is the act of storing up decomposable materials that remain in a container until they are ready for use.

The compost so obtained can be used to improve the fertility of the soil where crops will be planted.

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The question about the flow of matter and energy during fermentation that the experiment answers is: Do yeast use sugar for energy and produce a gas?

The correct option is D.

Fermentation is the process by which organisms break down food molecules to produce energy in the absence of oxygen.

Fermentation is a process of anaerobic respiration.

The anaerobic respiration that occurs in muscles is known as lactic acid fermentation.

In yeast cells, the anaerobic respiration that occurs is called alcohol fermentation. Alcohol is produced as well as carbon dioxide gas.

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Two possible consequences of the release of these turtles into Gulf waters, including the effect on native turtle species are

An invasive turtle species poses direct competition with native turtles within Gulf of Mexico, resulting in possible shrinkage in population sizes for the latter group. Resource scarcity driven primarily by competition over access to nests, habitats and food sources can render natives less effective at these activities compared to their new rivals.

Furthermore, identifying underlying consequences triggered by invasive species' potential alteration of ecosystem dynamics (eg: substantial loss or balanced gain) remains crucial for further consideration. The issue of climate change represents an imminent danger that threatens the well-being of our planet. Swift action from all corners of society is required, including private citizens, companies, and governing bodies across national borders.

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Bright-colored males is the feature which is expected to be seen where se×ual selection depends on male competition.

This is a condition in which two or more parties strive for a common goal which can't be shared.

Bright-colored males will attract mates through the color which gives it an advantage over the others during se×ual selection.

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Answer:

c. large males

Explanation:

just did the the quiz