What would be different about the graph before the evolution of photosynthetic organisms?

Answer:

a. false

b. true

c. true

d. true

Explanation:

a. Although viruses can survive outside a host on household surfaces, their ability to duplicate themselves is compromised-shortening the virus's life span. Humidity also makes a difference; no bacteria or virus can live on dry surfaces with a humidity of less than 10 percent.

b. Bacteria are among the fastest reproducing organisms in the world, doubling every 4 to 20 minutes. Some fast-growing bacteria such as pathogenic strains of E. ... coli bacteria under specific conditions.

c. Unicellular organisms are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organisms use many different cells to function. Unicellular organisms include bacteria, protists, and yeas

d. Microbial toxins are toxins produced by micro-organisms, including bacteria and fungi. Microbial toxins promote infection and disease by directly damaging host tissues and by disabling the immune system. Some bacterial toxins, such as Botulinum neurotoxins, are the most potent natural toxins known.

Natural Selection is the process in which an organism will survive if it is adapted to its environment.

Explanation:

Natural Selection is a theory given by Charles Darwin is an important part of evolution. In his theory, he stated that organisms which have adapted to their environment well than other organisms will have high reproductive count. As a result those with variation in their traits will have more offspring and sustainability. These adapted features are transferred from one generation to another.

Answer:

Natural selection

Explanation:

Because it's the answer :D

In the synthesis of proteins, mRNA carry information that determines the sequence of amino acids. The correct option is 2.

A certain sort of RNA called messenger RNA is required for the synthesis of proteins.

When cells are done producing a protein, they swiftly degrade the mRNA. Vaccine-derived mRNA does not enter the nucleus and does not change DNA.

Translation is the process by which ribosomes in the cytoplasm or endoplasmic reticulum make proteins after the process of converting DNA to RNA in the cell's nucleus, as defined by molecular biology and genetics. Gene expression refers to the entire process.

The function of mRNA is to transport protein information from DNA in a cell's nucleus to the cytoplasm, or aqueous core, of the cell, where the machinery that produces proteins can read the mRNA sequence.

Thus, the correct option is 2.

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Final answer:

When two plate edges made of oceanic crust collide, one plate is usually forced beneath the other in a process called subduction. The subducted plate is forced down into regions of high pressure and temperature, where it eventually melts and its material is recycled into a downward-flowing convection current.

Explanation:

When two plate edges made of oceanic crust collide, one plate is often forced beneath the other in what is called a subduction zone. The thinner oceanic plate can be thrust down into the upper mantle. This subducted plate is forced down into regions of high pressure and temperature, eventually melting several hundred kilometers below the surface. Its material is recycled into a downward-flowing convection current.

Answer: most likely D

Explanation:

A was close, B not it and C is only for heat use

Wind and moving water provide mechanical energy. They are renewable energy sources that harness the kinetic energy of natural movements to generate electricity. The correct answer is option (B).

Wind and moving water provide a form of energy known as mechanical energy. This type of energy is harnessed through the movement of turbines which convert the kinetic energy of wind or flowing water into electrical energy. Both forms of energy, wind power and hydroelectric power (hydroenergy), are considered renewable energy sources.

Winds and moving water are driven by the energy from the sun, which heats the Earth unevenly, causing wind, and evaporates water to high elevations, where it can later fall and flow due to gravity, powering turbines as it moves. This mechanism is similar across different forms of energy generation, such as fossil fuels, biofuels, nuclear energy, and solar thermal systems, where a spinning turbine creates an electric current.

Thus, the correct answer to the student's question is option B) mechanical energy.

Answer: B. the trade winds move away from it.

Explanation: Just got it correct

The incorrect statement is "the trade winds move away from it"

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Answer:

i can not help you with that

Explanation:

Answer:

When a heterozygous male and homozygous female plants are cross-pollinated the genotypic ratio of the offspring will be tt, Tt

Explanation:

In a pea plant, when the heterozygous male plant (Tt) is cross-pollinated with homozygous female plant (tt) ;

T × t = Tt

t × t = tt

t × T = tT

t × t = tt

Therefore, the genotypic ratio of the offspring is short and tall (tt, Tt) because the dominance of tall trait is less that the short trait, indeed the chances of tall offspring is low.

Answer:

The correct option is C) 1 only

Explanation:

It would be necessary to ask from the scientist about the group of people  on which he performed his experiment because it might be that certain other factor was the influence for the change in the requirement of Vitamin E, It might be that the people of that specific area or country might have a Vitamin E deficiency due to which there requirement was more for Vitamin E. Or there might be any other environmental or genetic factor influencing the change.

Answer:

the answer is gene

Explanation:

hope this helps :)

The structure carries instructions for producing the proteins that help make a person’s hair curly is gene. The correct option is D.

DNA is the component of genes. Some genes serve as blueprints for the synthesis of proteins. Many genes do not, however, code for proteins.

A few hundred DNA bases to more than 2 million bases make up a gene in a human.

Your human anatomy is created and maintained by your DNA. Genes are sections of your DNA that give you the physical traits that set you apart from others.

Your body's cells are guided by a detailed manual that is collectively present in your body.

The gene is the structure that contains the instructions for making the proteins that contribute to a person's curly hair.

Thus, the correct option is D.

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The cactus and brittle bush get their energy from sunlight because they are plants and use photosynthesis to make their own food.

Final answer:

Plants, algae, and some bacteria are the producers in the food web that receive their energy directly from sunlight.

Explanation:

Producers in a food web are organisms that conduct photosynthesis or synthesize sugars through other means, such as plants, algae, and some bacteria. These organisms obtain their energy directly from sunlight and convert it into usable chemical energy. Consumers, on the other hand, rely on producers, either directly or indirectly, for their energy. They include animals, fungi, and various microorganisms. For example, a deer receives its energy by eating plants, which in turn obtained their energy from sunlight. Therefore, the producers in the food web that receive their energy directly from sunlight are the plants, algae, and some bacteria.

It's a way of protecting the trees, and making sure they survive the winter and beyond. Leaves die during the winter months. If those dead leaves stayed on the trees, and new ones wouldn't grow in their place, the tree would have no way of making food for themselves.

Hope it helps. ☺

Leaves fall off trees in the fall due to cooling temperatures triggering deciduous trees to go into a dormant state, conserving water and energy. This process is called senescence. The components within the fallen leaves get recycled by the tree, providing it with nutrients during winter.

Leaves fall off trees in the fall due to a process known as senescence. This is a stage in a plant's life cycle when certain parts, such as the leaves of many trees, age and die off. This process is due to several factors, including changes in environmental conditions and photosynthetic efficiency.

Most leaves are the main sites for photosynthesis – the process by which plants produce food. When temperatures start to drop in the fall, the trees prepare for winter. They lose their leaves to conserve water and energy. The onset of cold weather causes leaf drop in a phenomenon known as deciduous trees going dormant.

A waxy cuticle on the outer surface of leaves prevents water loss, and the regulation of water is achieved by opening and closing of stomata - small openings on the leaf surface. However, to conserve water during winter, the trees drop their leaves. The elements within the fallen leaves are then recycled by the tree, feeding it during the colder months.

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Question: In The Divine Comedy, Dante Alighieri uses poetry to explore

A. the simplicity of human nature.

B. the complexity of human nature.

C. the existence of life after death.

D. the power of political turmoil.

Answer:

In the divine comedy dante alighieri uses poverty  explore "The existence of life after death."

Explanation:

In his story of the poem recollected as the Divine Comedy, Dante imagines a imaginary story of himself who voyages over the particularly spreads of hell, amends, and Ecstasy. Several structures that he calls laterally this voyage have leftward an lasting influence on the Western supposed for more than half a period.  In fact, the somewhat conventional pictures of the hereafter clarified are all depicted in his effort. But Dante also found novel ways to depict previously well-formed thoughts, thus further setting them while also redesigning them into new entrances that would develop common to uncountable ages that convoyed.

Answer:

In The Divine Comedy, Dante Alighieri uses poetry to explore the existence of life after death.

The Divine Comedy is an Italian long narrative poem by Dante Alighieri.

The narrative deals with Dante's travels through Hell, Purgatory, and Paradise or Heaven, while allegorically the poem represents the soul's journey towards God. Dante insipired on medieval Christian theology and philosophy, especially Thomistic philosophy and the Summa Theologica of Thomas Aquinas.

Explanation:

A change in gene sequence can lead to a different amino acid being added to a polypeptide chain instead of the normal one. This causes a change in protein structure and function.

This question “How fast can light travel” is considered as an good scientific question because it helps inform for other experiment.

Answer: Option D

Explanation:

The speed of light is a universal physical constant and it is found to be [tex]3 \times 10^{6} \mathrm{m} / \mathrm{s}[/tex] and it is important to determine various physical units such as electromagnetic wave propagation, e.g., optics, radio waves.

This light constant is majorly used in many of the experiments and hence it is very much helpful in determining values required in an experiment.  Thus the measurement of the light speed can help us inform other experiments, so we can conclude option D as correct answer.

Answer:

x= 0, y = 2

Explanation:

4x + 5y +2 = 12

Let's suppose that

x = 0

y = 2

By putting the values of x and y

4(0) + 5( 2) + 2  = 12

0 + 10 + 2 = 12

12 = 12

Hence, it is proved that x = 0 and y = 2

Answer with Explanation:

"Biome" refers to the flora (plant life) and fauna (animal life) of a particular place. It also includes the climate and specific conditions that allow the living organisms in the environment to survive.

The biome of North Africa consists of both desert biome and rainforest biome. It can be classified into a "savannah biome." This means that both the grassland and the woodland co-exist with each other. On the contrary, the biome in Iceland consists of a "tundra biome." The appearance of this biome is uniform and it is considered the coldest among all the other biomes.

Both of the biomes in North Africa and Iceland are different owing to their temperature, precipitation, nutrients from the soil and so on. The savannah biome consists of both wet and dry climates. These seasons allow the growth of both trees and grasslands. When it comes to the tundra biome, its temperature is extremely low. Thus, it doesn't allow many plants or trees to grow. However, it allows the growth of some unique types of wildlife such as the "Arctic fox."

The following is one way that beach erosion can occur is storm waves pulling sand from the beach out into the ocean.

Marine erosion, also called maritime erosion, is defined as “the process of wear, transport and sedimentation of rocks and coastal soils by erosive agents”. Fundamentally, it can be caused by the action of three factors: waves, currents and tides.

As natural causes, sea level rise, storm surge, tectonic subsidence and changes in watersheds can be listed. As anthropic causes we can mention the subsidence of the soil, the removal of sand for human activities and the construction of dams.

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Answer:

D. it reduces pest insect population

Answer:begins without any further replication of the chromosomes. the nuclear envelope breaks down and the spindle apparatus forms

Explanation:

Answer:

1,2,5 are correct

Explanation:

Producers make and sell things, consumers buy goods and services, producers provide services to consumers.

The statements that accurately describe the roles of producers and consumers are:

Producers are the individuals or businesses that create goods or services. They produce and sell products to consumers who buy them. Consumers, on the other hand, are individuals or households that purchase goods and services from producers. They play a crucial role in the economy by creating demand for products and services.

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Final answer:

Recessive traits would never reappear if all individuals were homozygous for the dominant allele, eliminating the recessive allele from the gene pool. However, this scenario is highly unlikely due to genetic diversity, sexual reproduction, and Mendelian inheritance patterns.

Explanation:

Recessive traits would never reappear if every individual in a population were homozygous for the dominant allele. This situation implies that all copies of the recessive allele have been completely removed or mutated to a dominant form within the gene pool. However, this scenario is highly unlikely in natural populations due to genetic diversity and sexual reproduction. The key to understanding this phenomenon lies in Mendelian genetics, where Gregor Mendel's experiments with pea plants demonstrated how traits are inherited from generation to generation.

Mendel's cross-breeding experiments led him to discover that dominant traits mask recessive traits in the first filial (F1) generation, making the recessive traits disappear phenotypically. However, these recessive traits reappeared in the second filial (F2) generation at a ratio of 3:1, dominant to recessive, when F1 plants were crossed. This was because the F1 generation plants were heterozygous for the trait, carrying both dominant and recessive alleles.

Therefore, for recessive traits to never reappear, it would require an unrealistically uniform genetic landscape where no individual carries the recessive allele. The principles of genetics and probability, including the application of the Hardy-Weinberg equation, illustrate how the genetic variation is maintained in populations, making the complete disappearance of recessive traits highly improbable without significant human intervention or extreme natural selection pressures.

Answer AND Explanation:

A. haploid generation - Gametophyte

B. a group of fern sporangia - sorus

C. develops into a fruit - ovule

D. develops into a seed - ovary

E. gametophyte and sporophyte appear to be the same - isomorphic alternation of generations.

F. contains only stamens - male flower

G. gametophyte and sporophyte appear to be different - heteromorphic alternation of generations.

H. diploid generation - sporophyte

Answer:

The correct option is B) as the light colored moths were seen and eaten, the allele for dark colour became more prevalent in the population.

Explanation:

The process of natural selection tends to favour those organisms which are better adapted to live in an environment. Evolution changes the allele frequencies of a population over time depending on the traits favoured by natural selection.

Before the industrial revolution, the colour of the trees was lighter and hence, the light coloured moths were better adapted to such environments as they could hide from predation. After the industrial revolution, the colour of the woods of trees became darker. The light coloured moths were no more able to hide from their predators and hence their population declined.

Final answer:

Peer review is an evaluative process conducted by experts in the field who examine research before its publication to ensure quality, reliability, and validity in the scientific community.

Explanation:

The best definition of peer review is a process where researchers submit their work to be scrutinized and critiqued by other experts in the same field before it is published in a scientific journal or presented to a broader audience. The purpose of this process is to maintain high standards of quality, improve performance, and provide credibility. Peer reviewers evaluate the research on multiple criteria, including the rationale, methodology, ethical considerations, statistical analyses, and the conclusions of the research. They also assess the significance of the results to advance the discipline's knowledge. Authors receive constructive feedback and might have to revise their work, which contributes to the reliability and validity of scientific knowledge.

Peer review is conducted anonymously, which is critical for maintaining objectivity in the process. By not knowing each other's identities, reviewers and authors are likely to be more honest and unbiased in their critique and response, leading to a more thorough and rigorous review. This anonymous process also helps to prevent conflicts of interest and promotes a fair evaluation based on the quality of the work itself.

Answer:

A scientific theory is an explanation of an aspect of the natural world that can be repeatedly tested and verified in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results. Where possible, theories are tested under controlled conditions in an experiment.

Explanation:

Answer:

During an El Nino event, ocean currents are reversed along the equator and along the west coast of South and Central America.

Explanation:

Final answer:

El Niño disrupts normal ocean and atmospheric circulation patterns, leading to a redistribution of warm water across the Pacific and altered weather patterns worldwide due to teleconnections.

Explanation:

The phenomenon of El Niño is a significant disruptor of both ocean and atmospheric circulation patterns. During an El Niño event, the normal trade winds weaken or may even reverse, which changes the distribution of warm and cool waters across the equatorial Pacific Ocean. This alteration in ocean circulation leads to changes in atmospheric convection, with a shift in the regions of rising moist air and the associated formation of high and low-pressure systems.

Consequently, the traditional Walker Circulation, which underpins much of the climatic stability in the Pacific region, is disrupted. The movement of warmer waters eastward toward South America suppresses the usual upwelling of cold, nutrient-rich water, leading to a shallower thermocline. This shift in ocean temperatures has far-reaching effects on weather patterns across the globe due to interconnected atmospheric conditions, known as teleconnections).

These teleconnections can trigger extreme weather events such as droughts in areas like Indonesia and Australia, and flooding in South America. The shifts can also offer some degree of predictability to weather patterns in regions such as North America, Brazil, Australia, South Africa, and others, a season in advance. This interconnectedness highlights the delicate balance between the oceanic and atmospheric systems and the global impact of localized changes in the equatorial Pacific.

Answer:

Protein found in antibodies provides the immunity to our body to fight against any foreign antigen.

Explanation:

Antibodies are proteins that play a key role in the immune response by targeting and destroying foreign substances. They help protect the body against infections.

Proteins have many different functions in the body. While structural proteins make up the cytoskeleton and scaffold of cells, antibodies have a different role. The main function of antibodies is to mount an immune response against foreign substances, such as bacteria or viruses. Antibodies bind to these substances and target them for destruction, helping to protect the body against infections. For example, when we get a vaccine, our bodies produce antibodies that recognize the specific pathogen introduced in the vaccine and help us develop immunity to that pathogen.

Answer:

The correct answer is : offspring with red and green cones.

Explanation: