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Based on the model...

a. This is an illustration of a(n) __________ factor.

b. The biotic and abiotic factors share a(n) ___________.

An action that can both humans and flatworms do is, to smell fresh foods.

Flatworms may be defined as an organism that belongs to the phylum Platyhelminthes and possesses soft-bodied invertebrate usually much-flattened acoelomate.

The sensory receptors of flatworms are not much developed due to a lack of spinal nerves. They are not able to communicate verbally as well.

Therefore, an action that can both humans and flatworms do is, to smell fresh foods.

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Answer:

i thought it was evaporation lol

Explanation:

Answer: When the Earth is tilted toward the sun the Northern Hemisphere is in the warm season and when the Earth is tilted away from the sun the Northern Hemisphere is in the cool season. ... There would no longer be season as we know them. The temperature and precipitation pattern would not vary much.

Explanation:

Answer:

If the concentration of H ions were higher inside the mitochondrion than outside the mitochondrion then the H ions would move to outside the mitochondrion to equalize the pH of both inner and outer side through the opened channel.

In mitochondria H ions usually move from mitochondrial matrix to inner membrane of mitochondria by active transport. This generates an electrochemical gradient due to the low pH in the mitochondrial membrane than in matrix.

This gradient allows the H⁺ to flow back into the matrix through ATP synthase which generates energy in the form of ATP and equalize the pH both the side.

The correct answer is option B

The main agenda of environmental policy is to reduce the impact of human activities on environment. Human activities can adversely effect the environment.

This policy makes sure that there must be a healthy interaction between the environment and human beings.

It has some policy that has to be maintained by the human beings to reduce its effect on environment.

The main function of environmental policy is to reduce human impact on the environment by regulating activities that affect natural resources and ecosystems.

The main function of environmental policy is b. reduce human impact on the environment. Environmental policies are developed and implemented by governments and organizations to protect natural ecosystems, manage natural resources sustainably, and mitigate the negative effects of human activities on the environment.

These policies can include regulations on pollution, conservation efforts for wilderness areas and fresh water supplies, managing fossil fuel reserves, and reducing atmospheric carbon dioxide to combat climate change.

The rationale behind such policies is to ensure a balance between economic development and environmental protection, thus safeguarding the planet for current and future generations.

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Answer:

Answer:

Mutations ( usatestprep )

Answer: Option (4) is the correct answer.

Explanation:

An atom consists of three types of sub-atomic particles which are electrons, protons, and neutrons.

Protons have a positive charge and neutrons have no charge. Whereas electrons have a negative charge.

Protons and neutrons are placed inside the nucleus of an atom. On the other hand, electrons revolve around the nucleus of the atom.

Thus, we can conclude that the structure of an atom is best described as electrons in orbit about a nucleus of protons and neutrons.

The answer is option B. The number of protons

If two atoms are isotopes of the same element then the number of protons in those two atoms must be same but the number of neutrons must not be same. If number of neutrons of an atom vary but number of protons in them are same then it simply means that they both are isotopes of a particular element. As we know that every atom has a nucleus which has protons and neutrons and due to these protons and neutrons an atom has weight. Apart from that, an atom has electrons too but they are outside the nucleus. Electrons are extremely light in weight so they do not contribute towards weight but they have a great role in chemical reactions. During chemical reactions, it is electron which directly participates, while proton and neutrons do not take part or move during chemical reactions. Also, in a neutral atom number of protons is equal to number of electrons but when an atom becomes negatively or positively charged, it can gain or loose electrons so electrons have tendency to vary. That is why we cannot consider electrons to be always same for isotopes of an element. It is clear that for an isotope, the number of electrons and neutrons will vary but the number of protons will always be fixed.

Isotopes of an element are atoms of the same element with the same number of protons but different numbers of neutrons. So, the number of protons in the atoms right answer.

The correct answer for this question is B. The number of protons should be the same for two atoms to be considered isotopes of the same element. Isotopes are different forms of the same element that have the same number of protons, but a different number of neutrons. This means that they are in fact the same element, as the number of protons in an atom determines what type of element it is. Regardless of whether an isotope is radioactive or stable, it will still have the same number of protons as the original element. The number of electrons or molecules do not determine isotopic identity.

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Answer:

im pretty sure its gene control

Explanation:

The lives of individuals with insulin-dependent diabetes have been improved by genetic engineering, which allows for the low-cost, large-scale production of human insulin, reducing allergic reactions and enhancing treatment effectiveness.

Genetic engineering has notably improved the lives of individuals with insulin-dependent diabetes through the development of recombinant DNA technology. This innovation allowed for the production of human insulin in E. coli bacteria, circumventing the previous reliance on pig insulin, which elicited allergic reactions in some patients due to slight differences in protein structure between human and pig insulin.

Since its initial development in 1978, the process has been refined to enable large-scale and low-cost production of human insulin. This advancement has made insulin therapy more accessible and reduced the risk of allergic reactions, thus improving the quality of life and treatment effectiveness for those managing their diabetes with insulin injections.

The function of the earth's atmosphere does not involve the volcanoes that erupted so much.

The following should be the function of the earth atmosphere:

Therefore we can conclude that the function of the earth's atmosphere does not involve the volcanoes that erupted so much.

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If a zygote has 4 chromosomes, The somatic cells formed from it have how many chromosomes 4.

When a cell is not dividing, chromosomes cannot be seen in the nucleus, not even under a microscope. However, during cell division, the DNA that makes up chromosomes gets more compactly packed and becomes visible under a microscope.

The majority of what scientists understand about chromosomes comes from studying them during cell division.

The centromere, a point of constriction on each chromosome, separates the chromosome into its two "arms." The "p arm" refers to the chromosome's short arm.  The "q arm" refers to the long arm of the chromosome. Each chromosome has a centromere.

Therefore, If a zygote has 4 chromosomes, The somatic cells formed from it have how many chromosomes 4.

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Answer: Only men have them

Explanation: just got it right on A p E x

Answer:

The movement is called revolution when a body travels around another body in space.

Explanation:

The movement is called revolution when a body travels around another body in space. It is different from rotation which is a phenomenon where a body revolves around its own axis. For example, we can assume the motion of earth as revolution when it travels around the sun and completes one complete revolution in one year, on the other hand when it moves around its own axis the day and night transformation happens.  We can also take the example of moon which revolves around the earth and many other planets which revolve around the sun. So it is very easy to understand the concept of revolution.

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Inorganic fertilizers have a positive effect on agricultural crops but can adversely affect the surrounding areas and show a negative result by running off into ponds and lakes. The fertilizers are toxic and can pollute the water bodies.

Fertilizers are the chemicals which are added to the soil to increase the fertility of soil. Chemical fertilizers overuse can contribute to both the soil acidification and the soil crust, thus reducing the content of organic matter, humus, beneficial species in the soil and also reduces the plant growth, alters the pH of soil, growth of pests, and even lead to the release of many greenhouse gases.

Too much use of fertilizers can kill the plants and the excess amount of fertilizers can runoff into waterbodies causing toxic algal blooms to develop which are harmful to aquatic life and other living organisms. Excess fertilizer runoff from agricultural lands can also contribute to aquatic “dead zones” in coastal areas.

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Answer:0 K

Explanation:

The motion of atoms and molecules stops at 0 K (zero Kelvin), which is the last option, as at this temperature, all matter would have zero entropy and no heat energy. However, it is impossible to actually reach absolute zero in reality.

The temperature at which the motion of atoms and molecules stops is known as absolute zero. It is equivalent to 0 kelvin (0 K), -273.15 degrees Celsius (-273.15 °C), or -459.67 degrees Fahrenheit (-459.67 °F). At absolute zero, atoms and molecules have no thermal energy, and they stop vibrating or moving. However, achieving absolute zero is practically impossible because it requires the complete elimination of all forms of energy, including all internal energy and the energy of motion. Scientists have been able to achieve temperatures very close to absolute zero, but not precisely at it.

Hence, the motion of atoms and molecules stops at 0 K (zero Kelvin), which is the last option, as at this temperature, all matter would have zero entropy and no heat energy. However, it is impossible to actually reach absolute zero in reality.

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Answer:

The magnetic field of electromagnets depend on current

Explanation:

An electromagnet is a temporary magnet because it do no have any inbuilt source of magnetism. The electricity flowing through it produces magnetic force  and as soon as this electric force is removed , the magnetic force also vanishes.

Thus, the magnetic field of electromagnet depends on the potential for an electric field.

Wherever there is electricity, there is a magnetic field, and wherever there is magnetism, there is potential for an electric field.

An object that possesses a magnetic field and exerts a type of magnetic force are called a magnet.  Magnets can be temporary or permanent based on their properties.

The difference between the magnet is due to the current.

The flow of an electric current produces an electromagnet, the electromagnet remains working only when the current is flowing, when the current is turned off, the electromagnet loses its properties.

The material, coiling and the amount of current determine the nature of the electromagnet. While bar magnets are small magnets used for attracting metallic objects.

Therefore, an electromagnetic field relies on the potential of an electric field.

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Answer:

To provide clean drinking water in areas where there is no ground water or it is contaminated.

Explanation:

Rainwater can be reused in a number of ways where with a rainwater catchment system it is entirely possible to reduce the use of drinking water as well as expenses, not to mention flood reduction, flooding, future water rationing, and still help the environment with that.

In addition to allowing the drinking water economy, rainwater capture is extremely important in places where water is contaminated or drought punishes almost the whole year and water scarcity ends up being frequent as is the case of countries like Africa for example.

The answer should be the first option

Maintenance costs due to salt water corrosion

Answer:

plant - grasshopper - mouse - snake - hawk

Explanation:

A food chain shows how energy is transferred from one organism to another in an ecosystem. Arrows point from one organism to the organism that eats it. Photosynthetic organisms, such as plants, are always at the bottom of a food chain. In a desert ecosystem, plants would be eaten by grasshoppers, grasshoppers would be eaten by mice, mice would be eaten by snakes, and snakes would be eaten by hawks. So, the most likely food chain would be:

plant → grasshopper → mouse → snake → hawk

Bacteria contribute to ecosystems through nutrient cycles, symbiotic relationships, and reducing parasites. Some bacteria have beneficial roles in the human body, but others act as pathogens. Bacteria can cause diseases by using host cells as food and releasing toxins.

Bacteria play important roles in ecosystems by contributing to nutrient cycles, providing food for consumers, and reducing the number of parasites in organisms. They can also form symbiotic relationships with other organisms, such as nitrogen-fixing bacteria living on the roots of legumes. However, some bacteria are pathogenic and can cause diseases in humans and other organisms.

In terms of the human body, bacteria can have both beneficial and harmful effects. Some bacteria aid in digestion, produce vitamins, and contribute to the development of the immune system. However, certain bacteria can act as pathogens and cause diseases.

Bacteria can cause diseases by using the cells of the organism they infect as food. They can also release toxins that harm the host organism. Antibiotics are often effective against diseases caused by bacteria, but not all antibiotics work against all types of bacteria.

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The clearance of forests causes great impact on both the environment and humans. These include loss of nutrients availability, soil erosion, flooding, water pollution, hotter and drier weather conditions, global warming, as well as reduction in biodiversity.

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Ans.

In a evolutionary or phylogenetic tree, the nodes represent common ancestral species of the descendants, which are represented by the tips of branches, arising from the nodes.

According to the given evolutionary tree, all organisms are evolved from a common ancestor, represented by the last node, which was present about 13 million years ago. Hence, the option 1). is correct.

The second last node is showing a common ancestor to gorilla, chimpanzee, bonobo, and human, which was evolved to different species about 6 million years ago. Hence, the option 3). is correct.

Thus, the correct options are 'option (1). and option (2).'

All organisms have had one common ancestor in the past. This statement reflects the concept of universal common ancestry in evolutionary biology. Gorillas share an extinct ancestor with bonobos. This statement suggests that gorillas and bonobos, two different species of primates, share a common ancestor in their evolutionary history.

The correct option is 1 and 3.

Over vast periods of time, species diverged and branched off from this common ancestral lineage, leading to the diversity of life we see today. The branching or divergence of their lineages from this common ancestor resulted in the separate evolution of gorillas and bonobos as distinct species.

Evolution does not work on a linear scale where one species is more "evolved" than others. Each species has its own unique evolutionary history and adaptations. Chimpanzees are more closely related to humans than they are to some other organisms, but this does not imply a hierarchy of evolutionary advancement. Evolutionary history does not involve a concept of species being equally evolved. Humans and chimpanzees share a common ancestor but have followed different evolutionary paths, resulting in distinct species. Orangutans, gorillas, and bonobos are all primates and share a common ancestor further back in evolutionary history. They are related, but they belong to different branches of the primate family tree, with each species having its own evolutionary lineage.

Hence , 1 and 3 are the correct option

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