Which of Earth’s layers is made of melted materials

A.The crust

B.The inner core

C.The lithosphere

D.The outer core

Answer:

Option A, 75 percent

Explanation:

Given -

Allele for widow’s peak (W) is completely dominant over the allele for a straight hairline (w).

A cross is carried between two parents that are heterozygous for a widow’s peak

Thus, the  offspring produced by the cross between two parents with genotype "Ww" is

Ww * Ww

WW, Ww, Ww, ww

Except "ww" genotype all the remaining offspring have widow's peak.

Thus, the probability of two parents heterozygous for a widow’s peak (Ww) having an offspring with a widow’s peak is

[tex]\frac{3}{4} * 100\\0.75*100\\75[/tex]%

Hence, option A is correct.

Answer:              decreasing; increasing

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A solar eclipse is when the Moon blocks the Sun's rays from reaching the Earth. The Moon must be precisely aligned with the Sun and Earth. There are total and partial solar eclipses, depending on whether the Moon's shadow completely or only partially blocks the Sun.

A solar eclipse occurs when the Moon moves between the Sun and Earth, casting a shadow on Earth, and temporarily blocking the Sun's rays from reaching Earth. The correct answer to the student's question is (C). A solar eclipse is when the moon blocks the sun's rays from reaching the Earth. During a total solar eclipse, the Moon's umbra (the darkest part of its shadow) intersects with Earth's surface and completely obscures the Sun's light from view in a small area, allowing observers to see the Sun's corona. If only part of the Sun is covered, resulting in some sunlight still reaching Earth, it is called a partial solar eclipse. Solar eclipses are relatively rare because they require the Sun, Moon, and Earth to be precisely aligned in the same plane, known as the ecliptic.

Genes are the hereditary unit, which transmits the genetic information from the parent to the offspring. Human-made and environmental factors can influence the expression of genes.

Thus, environmental factors such as sunlight, water, temperature, and oxygen level influence the genetic expression in organisms.

Learn more about genetic expression here:

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hello! it would have to be D. The force of gravity causes mass wasting to occur faster.

the reason being just that.

The tarsals are seven bones in the ankle that transmit body weight from the tibia and fibula to the foot. They play a crucial role in balance, shock absorption, and efficient movement. Key tarsal bones include the talus, calcaneus, navicular, cuboid, and three cuneiforms.

Function of the Tarsals

The tarsals are the seven bones that make up the ankle. The ankle's primary function is to transmit the weight of the body from the tibia and fibula to the foot. The seven tarsal bones include the talus, calcaneus, navicular, cuboid, and three cuneiform bones.

The talus articulates with the tibia and fibula superiorly, forming a joint that allows for the up-and-down motion of the foot. The calcaneus, or heel bone, is the largest of the tarsals and supports much of the body's weight when standing or walking.

The other tarsal bones (navicular, cuboid, and three cuneiforms) help to form and support the arch of the foot, which provides additional shock absorption and aids in the ability to move efficiently and maintain balance. This arch is crucial for activities like walking, running, and jumping.

Answer:

The independent varible is old and new and the dependent variable is 20 T-shirts.

Explanation:

An independent variable is a variable whose value does not depend on any other factor. Whereas a dependent variable is a variable whose value depends on another factor.

Hence, in the given situation old and new detergent are independent variables as they do not depend on any other factor.

On the other hand, 20 dirty T-shirts are dependent variable because they get clean only if the detergent is strong enough.

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Answer: a. Mitochondria and chloroplasts contain their own set of DNA.

Explanation:

The theory of endosymbiosis suggests that origin of mitochondria and chloroplast in eukaryotes were the individual primitive prokaryotic organisms. The mitochondrial and chloroplast DNA and protein synthesis was found similar to the bacteria. This provided the evidence for endosymbiotic hypothesis. It was determined that chloroplast as well as mitochondria divide independently in the cell where they live just like individual bacterial cell.

Answer:

Model                0M      5M      10M      15M     20M    25M     30M    35M     40M

Conglomerate  600g  590g   580g   520g   500g  460g    300g   210g    105g

Plain                 280g  260g   260g   250g   240g   235g    220g   215g   210g

In view of the chart and information table, the dissolving pace of both models is started gradually. As time proceeded with the plain model proceeded at a fundamentally the same as rate. The Conglomerate model was distinctive on the grounds that it expanded its dissolving rate gigantically from 25 minutes to 40 minutes.

Answer:

caused by the chemicals in mineral b.

Explanation:

Had it on my quiz

Answer: A. secondary succession

An ecological succession is a phenomena which involves gradual series of events which brings changes in the biotic community of the ecosystem with respect to changes in the non- living factors such as soil, water, natural calamity like (forest fire, drought, flood) and time until the ecosystem attains stability. Secondary succession occurs in an area which was previously colonized by floral and faunal species but was disturbed by natural or man-made calamity like forest fire, clear-cut, drought, flooding.The ecosystem again attain colonization due remains of biological species and suitable abiotic factors such as soil, water, weather. Secondary succession is most likely to occur immediately after a rainforest in Brazil is clear-cut as secondary succession facilitates quicker compensation for damage and loss in an ecosystem.      

Final answer:

A medium-sized star is about the size of our Sun, which is approximately 1.4 million kilometers in diameter. Most nearby stars are of similar size, and the Sun is brighter and more massive than about 80% of the stars in the Galaxy.

Explanation:

When considering the size of a medium-sized star, one can generally refer to a star that is about the size of our Sun. The Sun itself has a diameter of approximately 1.4 million kilometers. Most nearby stars have typical diameters around this scale, fitting the definition of a medium-sized star. However, there is a diverse range of star sizes, with some much smaller and others much larger than our Sun.

Various measurements and observations indicate that while there are exceptions, a significant number of stars fall within the spectrum of being medium-sized, implying sizes that are quite similar to our Sun. Stars significantly more massive than the Sun are quite rare within our local cosmic neighborhood; within 30 light-years of the Sun, none exceeds four times the mass of the Sun.

The Sun is also more massive than most of the stars in our vicinity, being brighter than about 80% of the stars in the Galaxy, further underscoring its qualification as a medium-sized star. Therefore, when referencing a medium-sized star, the size of our Sun serves as an apt comparison.

Answer:

a or d

Explanation:

The Oxygen-Carbon Dioxide Cycle. Plants use carbon dioxide in a process known as photosynthesis. During photosynthesis, plants give off oxygen as a waste product. ... Animals breathe in the oxygen made by plants and breathe out carbon dioxide as a waste product.

Answer: density dependent  

Limiting factor is a resource or environmental condition which limits the growth, abundance or distribution of population of species in an ecosystem. A limiting factor can be living or non-living affecting the size of the population of species in an ecosystem. Density dependent limiting factor causes decline in population per capita growth with increasing population density. Density dependent limiting factors are mostly biotic (living) rather abiotic (non-living).

Density dependent limiting factor will affect a large population more than it affects a small population because of the following reasons:

1. Competition: When a population attains high density, the members of the population compete for available resources like food, shelter, water, mates and other resources required for survival and reproduction. The competition for resources will limit the members in the population.

2. Predation: Larger population may attract more number of predators. Therefore, density in this case will result in limitation in population size.

3. Disease: When more number of individuals living in the same locality, there are chances of transmittance of diseases, hence, will result in decrease in population.

4. Accumulation of waste: High population density can lead to accumulation of biological wastes, which can contaminate the living environment, hence can limit population size.

Answer:

Yes matter can be reused.

Explanation:

According to law of conservation it can be says that matter can neither be created nor be destroyed but it can transform from one from to another form by the help[ of chemical reaction.

It is known that anything which occupies space and volume is known as matter. The simplest form of matter is atoms. These atoms combine to form molecules and these molecules bonded together with the help of chemical reaction and forms other molecules.

By the above discussion it can be concluded that matter is reused by the help of chemical reactions.

Unfavorable abiotic and biotic factors can severely impact species by altering habitats, limiting resources, and affecting net primary productivity, which can threaten survival and reproduction of plants and animals.

Unfavorable abiotic factors, such as extreme temperatures, low rainfall, high salinity, and insufficient sunlight, can drastically affect a species by altering its habitat, reducing its food resources, limiting its water supply, and challenging its survival and reproduction. Biotic factors like competition, predation, and disease also play a critical role in shaping a species' ability to thrive. For example, in aquatic environments, high salinity and low light levels due to algal blooms can hinder the survival of freshwater species. In contrast, on land, poor soil quality and extreme climate conditions can affect plant growth, which in turn influences the animal populations that depend on those plants for sustenance.

Net primary productivity is also influenced by abiotic factors. It represents the rate at which plants convert atmospheric carbon dioxide into biomass through photosynthesis minus the rate at which they use this biomass for respiration. When conditions like sunlight and water availability are unfavorable, net primary productivity declines, leading to a decrease in available energy and resources within an ecosystem.

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