What state best describes natural selection

Does not normally live in an area is best describe about nonnative species. thus option A is correct.

Non-native species are organisms that do not occur naturally in an area, but are introduced as the result of deliberate or accidental human activities.

Invasive species may arrive in new areas through natural migration. However, other species often introduce them. Human activities are one of the most common ways invasive species are transported to new habitats. The activities can be either accidental or intentional.thus option A is correct

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your answer is A. An oxbow lake. this is because this landform is so named for its distinctive curved shape, which resembles the bow pin of an oxbow.

Answer:

Conduction

Explanation:

Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. Conduction occurs more readily in solids and liquids, where the particles are closer to together, than in gases, where particles are further apart.

Answer:

The answer is D

Explanation: This is because fungus are Eukaryotic unlike bacteria.  

Answer:

The correct answer will be option D.

Explanation:

Fungal infection are the infections caused by the fungi which are less common than infection caused by bacteria.

Fungi attack animals by direct colonizing and destroying the tissues and result in mycosis. Many fungal infections occur on the animal's skin.

Although rare, they are very difficult to treat as they are closely related to eukaryotic organisms and the compound that kill the fungi also harms the eukaryotic animal host. Additionally, antibiotics target only prokaryotic cells and not eukaryotic organisms. So, this limits the medical treatments that can be used against them.

thus, option D is the correct answer.

Answer:

The greatest disadvantage is the loss of genetic diversity is the Asexual reproduction allows the plants to reproduce very quickly.

Explanation:

This means the parent plant will be competing with a great number of offspring for the same nutrients, sunlight, and space.

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The comparison of the role of ATP in cells with the roles of RNA is that the structure of ATP s made up of ribose sugar, adenine nitrogenous base, and three phosphate groups while RNA is made up of ribose sugar, four nitrogenous bases (adenine, guanine, cytosine, uracil), and one phosphate group.

ATP stands for Adenosine triphosphate. It may be defined as a high-energy compound that provides energy to drive many processes in living cells, such as muscle contraction. It is the major source of energy for use and storage at the cellular level.

Both ATP and RNA possess ribose in their structure. RNA directly involves in the synthesis of protein which plays an essential function in the metabolic processes. While ATP provides direct energy to the cells for their effective functions.

Therefore, the comparison of the role of ATP in cells with the roles of RNA is well described above.

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Secondary pollutants are more harmful than primary pollutants. the given statement is true.

Pollutants that originate in the atmosphere are known as secondary pollutants. These contaminants aren't directly emitted by a source (like vehicles or power plants). Rather, they emerge when pollutants produced from these sources combine with molecules in the atmosphere to create a new pollutant.

Secondary pollutants are created by the reaction of primary pollutants with atmospheric chemicals. Ozone, smog, sulfur trioxide, acid rain, hydrogen peroxide, and acetylnitrites are all examples of this. These substances have been changed and are more harmful.

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Answer:

Soluble phosphorus

Explanation:

Soluble phosphorus is a measure of orthophosphate (PO4), the

soluble and inorganic filterable fraction of phosphorus, which is the most

stable type of phosphate and it is the form directly used up by the plant

cells.

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Susan can capture phosphorus as the phosphate ion (PO₄³⁻) when it is released into the environment through weathering of sedimentary rocks and becomes available to both terrestrial and marine food webs.

Susan will be able to capture phosphorus in the form of the phosphate ion (PO₄³⁻) as it is released from the sedimentary rocks. This release occurs through the processes of weathering and volcanic activity. Once phosphate is released into the soil, water, and air, it becomes available to terrestrial food webs. It also enters the oceans via surface runoff, groundwater flow, and river flow, where it becomes part of marine food webs. In these environments, living organisms take up phosphate ions to use in various biological processes such as the synthesis of DNA, RNA, and ATP.

DNA is composed of long strings of nucleic acid sequences, but not all of them code for proteins.But the ones that do are called genes.

Alleles are different versions of a certain gene.As an example, the gene that codes for blood type has 3 different alleles, A, B, an O. The genes that code for hair and eye color also have many different alleles.

Answer:

The correct answer is C) Passive transport

Explanation:

During the respiration process exchange of gases takes place between lungs and blood. This gas exchange is carried by simple diffusion which is a passive transport. Here gas molecule moves from area of higher concentration to the lower concentration area.

The lung's alveoli are surrounded by blood capillaries in which the concentration of CO2 is high while in alveoli concentration or partial pressure of CO2 is low so CO2 moves from blood to alveoli through diffusion.

In the case of oxygen, the concentration of oxygen is high in alveoli and less in blood inside blood capillaries so oxygen moves from alveoli to blood by diffusion. So the right answer is C.

First degree burns include only the outer layer of skin, otherwise known as the epidermis. Skin in this condition is usually red in appearance, and can be quite painful. An example of a first degree burn injury is a common sunburn. The skin will be dry, and healing usually occurs in 3-5 days. The injured epithelium peels away from the healthy skin during the healing process, and hospitalization is only required if the pain is intolerable or there is a fluid imbalance.

Second degree burns are further divided into two subcategories: partial thickness and full thickness. In partial thickness second degree burns, there may be blisters present and the injury will involve the epidermis and upper layers of the dermis. The wound will be pink or red in color, extremely painful, and may appear wet. This type of burn heals in several weeks without grafting and scarring is usually minimal.

Third degree burns are the most severe type. All layers of the skin are destroyed and the damage extends into subcutaneous tissues. Areas can appear black or white and will be dry or leathery in texture. The wound will not blanch when pressure is applied, and there is no pain involved because the pain receptors have been destroyed along with the rest of the dermis.

Answer:

During the final stage of the cell cycle, cytokinesis allows the cell to finish dividing, creating  

✔ two cells

with

✔ identical

copies of DNA.

Explanation:

edge

During the final stage of the cell cycle, cytokinesis will allow the cell to finish dividing, creating two cells with identical copies of DNA.

Cytokinesis is a crucial process that follows cell division by ensuring that the newly formed daughter cells receive their fair share of organelles, cytoplasm and genetic material.

This event marks the culmination of the cell cycle specifically the M phase and is essential for the continuity of life. As the cell undergoes mitosis or meiosis, its genetic material which are organized in chromosomes is equally divided into two daughter nuclei.

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Answer:

1. red shift: he displacement of spectral lines toward longer wavelengths (the red end of the spectrum) in radiation from distant galaxies and celestial objects. This is interpreted as a Doppler shift that is proportional to the velocity of recession and thus to distance.

2. blue shift: the displacement of the spectrum to shorter wavelengths in the light coming from distant celestial objects moving toward the observer.

3. The curve changes noticeably about 7.5 billion years ago, when objects in the universe began flying apart as a faster rate. Astronomers theorize that the faster expansion rate is due to a mysterious, dark force that is pulling galaxies apart. One explanation for dark energy is that it is a property of space.

4. A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. For this reason, some nebulae are called "star nurseries."

5. Elliptical, Spiral, and Irregular. Two of these three types are further divided and classified into a system that is now known the tuning fork diagram.

A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars. Bars are found in between one third and two thirds of all spiral galaxies. Bars generally affect both the motions of stars and interstellar gas within spiral galaxies and can affect spiral arms as well.

6. a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles).

4.367 light years is how far they are from eachother.

7. Newton's law of universal gravitation states that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.[note 1] This is a general physical law derived from empirical observations by what Isaac Newton called inductive reasoning.[1] It is a part of classical mechanics and was formulated in Newton's work Philosophiæ Naturalis Principia Mathematica ("the Principia"), first published on 5 July 1687. When Newton presented Book 1 of the unpublished text in April 1686 to the Royal Society, Robert Hooke made a claim that Newton had obtained the inverse square law from him. In today's language, the law states that every point mass attracts every other point mass by a force acting along the line intersecting the two points. The force is proportional to the product of the two masses, and inversely proportional to the square of the distance between them.[2]

8. Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.

9. The asteroid belt is the circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called asteroids or minor planets.

10. Earth spins around its axis, just as a top spins around its spindle. This spinning movement is called Earth's rotation. At the same time that the Earth spins on its axis, it also orbits, or revolves around the Sun. This movement is called revolution.

A day is approximately the period of time during which the Earth completes one rotation around its axis.

An Earth year is 365 days. It's the time that it takes the Earth to orbit the Sun. Each planet takes a different amount of time to orbit the Sun, so the length of each planet's year is different to ours. See if you can match up the planet to the length of year below.

11. One says that galaxies were born when vast clouds of gas and dust collapsed under their own gravitational pull, allowing stars to form. The other, which has gained strength in recent years, says the young universe contained many small "lumps" of matter, which clumped together to form galaxies.

12. The outer planets are further away, larger and made up mostly of gas. The inner planets (in order of distance from the sun, closest to furthest) are Mercury, Venus, Earth and Mars. After an asteroid belt comes the outer planets, Jupiter, Saturn, Uranus and Neptune.

13. The seasons are caused by the tilt of the Earth's rotational axis away or toward the sun as it travels through its year-long path around the sun. The Earth has a tilt of 23.5 degrees relative to the "ecliptic plane" (the imaginary surface formed by it's almost-cicular path around the sun).

Explanation:

Answer:

Both of the above

Explanation:

Falsifiable means that some observation might show it to be false. In this case, I can perform a test in which the wavelength of the light shining on a plant is shortened, and the rate of the photosynthesis is not slowed down; then, the hypothesis is falsifiable.

A testable hypothesis is a hypothesis that can be proved or disproved as a result of testing. Again, I can perform a test in which the wavelength of the light shining on a plant is shortened, and measure the rate of the photosynthesis; then, the hypothesis is testable.

Answer: the sun is completely covered by the moon

Explanation:

Answer:

c. Factors 1 and 2 may be influenced by both nature and human factors

Explanation:

The sea level rising and the change in the atmospheric gases are both processes that are influenced by the nature, as well as by the human activities. Naturally, the earth has its own cycles, known as Milankovich cycles, through which the Earth warms up, or cools down, resulting in change of the atmospheric gases, and in accordance to that, change in the sea levels depending on the global climate. The humans to have become a big factor in the past few hundred years. The reason for that is that the humans with their activity started to release lot of greenhouse gases into the atmosphere, especially CO2 and methane. That has been changing the composition of the atmosphere, and the temperatures have been rising. The higher the temperatures, the more ice is melting around the poles and on the high mountains, resulting in an increase in the sea levels.

Answer:

its either c or d

Explanation:

i remember this but then again im a high school drop out

Answer: they are not pluripotent source apex

Explanation:

The biggest disadvantage of using adult stem cells for medical treatments is the acquisition and isolation which affects its reproducibility.

Adult stem cells are isolated from the mature adults. They are further divided into tissue-specific stem cells and bone marrow-derived stem cells

Recent developments in adult stem cell research may present an innovative and viable replacement for cell-based therapeutics.

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The answer to this question is scale. The scale is used to determine the actual distance between two points in a planimetric map.

This map only represents the horizontal position of features. This is also called by others the line map.  This usually consists of man-made and natural features.

These are from aerial shots by the use of modern technology. This map’s common features are street and water centerlines, sidewalks, culverts, utility lines, building footprints and vegetation. Sometimes, there are also other useful data attached in this map like titles of the properties, owners, assessed value, etc.

It is because of these, this map becomes a storage of valuable data which can be easily and quickly accessed.

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Answer:

The internal conditions must remain stable and constant. Body temperature, amount of water and amount of sugar.

Answer:

The internal conditions must remain stable and constant. Body temperature, amount of water and amount of sugar.

Explanation:

therefore that means that the other person is correct

Answer:

A) They form covelant bonds

Explanation:

covelant bonding occurs when pairs of electrons are shared by atoms.

Plant cells have different functions based on their different structures, as diverse structures are adaptations to perform specific jobs.

We can determine that the plant cells in the two images have different functions by observing their structures, answer choice D. This principle is known as the structure-function relationship in Biology. Different cells in a plant serve distinct functions, and these functions are often visibly indicated by the cell's structure. For example, a leaf cell that captures sunlight for photosynthesis would look different than a root cell that absorbs water and nutrients from the soil. Their differing structures are adaptations that enable them to effectively perform their particular jobs.

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Answer:

Climate change is a broad term which describes the drastic environmental shifts that the earth is experiencing due to both human behaviours and natural processes. Although the earth naturally goes through patterns of environmental change, humans accelerate those changes by putting pressure of the planet. Greenhouse gasses (especially CO2) are expelled by humans through our transportation systems, burning fossil fuels to use as energy, industrial manufacturing, and mass meat farms. These gases cloud the atmosphere, enveloping the earth in gas and creating a “greenhouse effect” that traps the sun’s heat and warms the planet. As the planet unnaturally warms, ice melts and increases the sea levels, ecosystems change to adapt to the new temperatures, animals go extinct under environmental pressures, and natural cycles are interrupted. Additionally, human air, water, and land pollution through trash and chemical byproducts also corrode ecosystems and contribute to climate changes.

Answer: Option B

Explanation:

Glycogen is a hormone which is used to regulate the amount of glucose in the blood. Insulin and glycogen are two hormones that helps in regulation of the blood glucose.

When there several hours of fasting then there is decrease in the level of glucose in the blood then the glycogen is produced to meet the required amount of glucose in the blood.

Answer:

D. Consuming a breakfast sandwich containing many carbohydrates.

Explanation:

Switching all cars to fuel cells would lead to a significant reduction in harmful emissions, decrease global dependence on fossil fuels, and necessitate a shift towards renewable energy to produce hydrogen. It would also involve challenges like developing a comprehensive hydrogen fuel infrastructure.

If all cars switched from burning fossil fuels to using fuel cells, we would expect several significant changes. First and foremost, there would be a notable reduction in the emission of harmful pollutants, as fuel cells produce water as their only byproduct. Unlike the combustion of gasoline, which releases carbon dioxide, nitrogen oxides, and particulates into the atmosphere, the synthesis of gaseous water from hydrogen and oxygen in fuel cells results in a cleaner environment. Additionally, the global demand for fossil fuels would decrease, potentially reducing the geopolitical tensions associated with oil production and distribution.

Another consequence could be the transformation of the global energy infrastructure. Energy sources would need to shift towards those that can produce hydrogen efficiently, such as solar and wind power, to supply the hydrogen required by fuel cells. This would accelerate the transition to renewable energy resources, further diminishing the carbon footprint of human activity.

However, the shift to fuel cell technology would also present challenges, such as the development of a comprehensive hydrogen distribution network to refuel vehicles efficiently. This would require significant investment and innovation in storage and transportation technologies for hydrogen, which is highly flammable and requires careful handling.

Hello There!

Taxonomy is the science of naming and classifying biological organisms on the basis of shared characteristics.

Taxonomy is the field of naming types of organisms.

Answer:

1. receoptors in her toe receive stimuli

2.her sensory neurone generates an impulse.

3. interneurones relay the impulse to motor neurons in spinal cord.

4. motor neurone signal the leg muscles

5. she immediately moves her foot

Explanation:

Answer:

A kind of nerve circuit that results in the generation of a reflex is known as the reflex arc. The information that originates from the surroundings is captivated by the sensory receptors, which converts the information to a nerve message and transmit it towards the central nervous system, which interprets it and produces a response.  

In the given case, the reaction is generated in the following manner:  

a. The receptors present in the toe attains stimuli.  

b. An impulse is generated by the sensory neurons.  

c. The impulse is relayed to the motor neurons in the spinal cord by the interneurons.  

d. The leg muscles receive the signals by the motor neurons.  

e. The foot gets moved instantaneously.