I need help with my homework that is due tomorrow and I can not find the answers in the book or online.

The correct option is D. The benefit of a circular economy is “decreases environmental degradation”.

A circular economy aims to create a sustainable economic system by minimizing waste, maximizing resource efficiency, and promoting the reuse, recycling, and regeneration of materials.

The other options are incorrect because:

The correct question is:

Which of these choices is a benefit of a circular economy?

A. Avoids the use of renewable resources

B. Leads to resource depletion

C. Requires a high rate of consumption

D. Decreases environmental degradation

Answer and Explanation:

Mitosis is the type of division that occurs in the general body cells resulting in growth while meiosis is the process that occurs during the formation of sex cells. Mitosis results in two daughter that are identical to one another and to the parent cell. In meisosis there is crossing over during prophase I.

Answer:

Exercise is important for the body to function properly.

Explanation:

Exercise helps a person to maintain the oxygen amounts in the body. Exercise, as such, enhances and regulates almost every system of the body including the nervous, respiratory, circulatory and hormonal systems.

The sympathetic division of the autonomic nervous system controls the physical activities in a person's body by detecting the low levels of oxygen and increasing amounts of carbon dioxide in the body.

During vigorous exercise, the autonomic system increases the heart rate and breathing to meet the demand for oxygen. Sensors in the carotid arteries, aorta, and right atrium communicate with the brain to modulate these functions. Hormonal release by the pancreas and thyroid also aids in metabolic regulation.

Effects of Vigorous Exercise on the Autonomic System:

During vigorous exercise, the body undergoes several physiological changes to meet the increased demand for oxygen and nutrients by the muscles. The autonomic system plays a crucial role in regulating these changes. When cellular respiration increases, so does the level of carbon dioxide in the blood, which stimulates receptors in the carotid arteries and aorta. These receptors send impulses to the medulla oblongata, which in turn accelerates the heartbeat. Additionally, increased muscular activity leads to more blood being driven back to the right atrium, causing its distension and stimulating stretch receptors. These receptors also send signals to the medulla, contributing to the increased heart rate.

The respiratory system of the brain is activated by psychological stimuli, motor neuron activation of skeletal muscles, and proprioceptors in the muscles and joints when exercise is initiated. This leads to an immediate increase in ventilation to supply the muscles with the necessary oxygen.

Moreover, the body's response to physical exertion also involves hormonal regulation. The pancreas and thyroid gland release hormones that regulate metabolism, contributing to the body's ability to adapt and perform under stress. These changes resemble the 'fight-or-flight' response and allow the body to cope with the demands of vigorous exercise.

Explanation:

 a) 1. If you were cross-breeding two plants whose only difference was their scent, you would be performing a monohybrid cross.​

The plants are physically identical, apart from alleles of one gene;thusthe cross is a monohybrid.

DNA sets contain genes that may have different forms called alleles. DNA, which is the genotype, is transcribed into mRNA and later translated into amino acids which are connected together by rRNA to form proteins which constitute the phenotype of an organism. DNA sequence mutations form new alleles, impacting the resulting mRNA, and thus the encoding protein. Within species, there may be adaptation, along with genetic drift, competitive breeding, and natural selection.

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Answer:

Monohybrid cross

Explanation:

Background:

Genes are defined as the units of heredity. Genes contain two or more alternative forms known as alleles. In terms of location, these alleles occupy a locus (place where the gene lies on chromosome) on each of the two homologous chromosomes.

Monohybrid Cross:

Government laws and agencies are needed to monitor our impact on the environment because they ensure compliance, provide scientific knowledge, and promote sustainability.

Government laws and agencies are needed to monitor our impact on the environment for several reasons.

In summary, government laws and agencies are needed to monitor our impact on the environment because they ensure compliance, provide scientific knowledge, and promote sustainability.

Answer:

They are exposed to different environments.

Explanation:

The isolated organism should have the same gene pool. This gene pool should be maintained if there is no other factor that disrupts it.

But the condition of the habitat might be different and this will create a natural selection. The environment will give advantages to certain traits while giving disadvantages to other traits. But a different environment will support different traits, so this can create variation.

Because! They are exposed to different environments.

Species mutate to fit their environment, like a hummingbird's beak getting longer because its new environment only has deep set flowers (found that out on some animal documentary).

Answer and Explanation:

Bacteria like E.coli have devised mechanisms of survival even when conditions are harsh. This is through the production of such enzymes as B-galactosidase that enable them break down substrates like lactose in their metabolism.

For E.coli, mechanism that controls how enzyme activity is turned on or off target the genes that code for the enzymes. This system is termed as lac operon, and the enzymes that are coded for by genes which are sometimes active or inactive and depending on substrate availability are referred to as inducible enzymes.

So how does the lac operon work?

Lac operon works to regulate lactose metabolism in E.coli. An operon refers to a collection of one or more structural genes that direct synthesis of a particular enzyme.

So when lactose is present in a growth media, it acts as an Inducer  hence it binds to lac oppressor (normally blocks operator). This reppressor then cannot block the operator, and RNA polymerase enzyme can proceed and bind the promoter hence transcription of the Z, Y and A genes that form the mRNA.

The mRNA in association with ribosomes initiate the synthesis of the following enzymes for lactose metabolism;

Permease, Y gene - that normally directs the entry of lactose into the cells

B-galactosidase, Z gene - that aim to break down lactose to simple units

Transacetylase, A gene - for complete lactose breakdown.

So after these events in E.coli cell, the lactose that was once available has been broken down and none is left to bind to repressor. What happens thereafter is the binding of this active repressor to the operator and thus system is shut down or more correctly, turned off.

Answer:

chlorofluorocarbon

Explanation:

The following is not an example of a naturally occurring greenhouse gas - chlorofluorocarbon

Gases that produce heat in the atmosphere with the increase of concentration in the atmosphere. These gases interact with particles of pollution and are stuck in the environment and increase the contamination of the environment.

Chlorofluorocarbons (CFCs) are not naturally occurring and are produced by human activities only as byproducts of foam production, refrigeration, and air conditioning.

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Answer:

Exposition develops social issues by introducing conflicts and settings.

Exposition in a play provides background information that helps the audience understand and engage with the social issues being explored. It establishes the foundation for exploring the social issues and presenting conflicts and different perspectives. Without exposition, the significance of the social issues would be diminished.

Exposition in a play refers to the introduction of background information about the characters, setting, and events. In terms of developing social issues, exposition can help a playwright by providing the necessary context for the audience to understand and engage with the social issues being explored in the play. For example, through exposition, the playwright can reveal the socio-economic status of the characters, the historical or cultural background of the setting, and the key events or incidents that contribute to the social issues being addressed.

By providing this information, exposition helps the audience to empathize with the characters and understand the social issues in a more nuanced way. It allows the playwright to establish the foundation for exploring the social issues and presenting different perspectives and conflicts. Without exposition, the audience may find it difficult to comprehend the significance of the social issues being portrayed, and the overall impact of the play in addressing those issues would be diminished.

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Answer:

The question is asking how has the study of mitosis affected scientists’ knowledge of cancer. Mitosis is a type of cell division ( so we reject answer c, since it doesn't have to do with cell division) and what we want is to have the cells divide slower (so we reject answer a), but unfortunately, we don't know how to do it yet (so we reject answer d) - the correct answer is: It led to an understanding of how cancer cells divide so rapidly.

Answer:

The correct answer is B). It led to an understanding of how cancer cells divide so rapidly.

Explanation:

Hope this help

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have a nice day!!!

Answer:

noun

Explanation:

Tony is a person, place, or thing

Answer:

The word Tony is a noun because a noun is a person, place or thing and Tony is obviously a person

                                            ---- have a great day

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Answer:

dermal and vascular tissue

Explanation:

Xylem and phloem are the vascular tissues present in plants. The phloem tissues are involved in the transfer of food from the leaves to all part of the plant. The xylem tissue is responsible for transferring water from the roots to all parts of the plants. The dermis of the under lying side of leaves contain abundant number of stomata for the loss of water. As the water is lost, a tension is generated in the xylem tissue which causes more water to be drawn from the roots. As a result, more water keeps on losing due to transcription.

Answer:

Parenchyma and ground tissue

Answer:

Compare the expected mosquito birth rates in the lowlands with the rates in the mountain regions.

Mosquito breeds more at higher temperature compare to at lower temperature because the temperature on mountain is a bit lower or lesser and this slows mosquito birth rates unlike lowland area where the temperature is high, hence; this establish the fact that the higher the temperature the higher the birth rate in mosquito and the lower the temperature the lesser the birth rate in mosquito.

Explanation:

Answer: When Ionic bonds involve a cation and an anion. The bond is formed when an atom, typically a metal, loses an electron or electrons, and becomes a positive ion, or cation. Then ions produced are oppositely charged and are attracted to one another due to electrostatic forces.

Explanation:

Answer: An ionic bond forms when​ there is a complete transfer of valence electrons from one metal atom to a non metal atom.

Explanation: The purpose of the transfer of the valence electrons from a metal atom to a non metal atom is so that the two atoms can attain a noble gas octet or duplet structure. Since there is a loss of electron by the metal atom and gain of electron by the non metal atom, the compound formed is usually ionic. Ionic bond is also called electrovalent bond.

Answer:

The envelope is an outer lipid bilayer that is studded with proteins. The function of the envelope is to identify and bind some receptor sites on the host membranes. After fusing with the cell membrane, it allows to capsid and genetic material to enter the cell and infect it.

Explanation:

Answer:

Water molecules are split.

Explanation:

Answer:

Prokaryotic cells are simple cells whereas Eukaryotic cells are large and complex cells.

Explanation:

Answer:

D

Explanation:

Answer:

D. Genetically distinct varieties of corn should be grown so that genetic variation will ensure at least some of the corn plants will be resistant to the corn rust.

Explanation:

Genetic diversity can be rare for selectively bred vegetable varieties, but it is the best method to use to ensure resistance to drought, pests, disease, and cold winters. Without genetic variation, one adverse condition could wipe out whole crop yields for a season.

Answer:

There are three types of survivorships:

Type 1: Type 1 survivorship includes organisms which have high chances of surviving through the early and middle stages of life. Their population tends to decline in the old age. For example, humans

Type 2: Type 2 survivorship contains organisms which have a constant mortality rate. The chances of an individual to die are independent of their age.For example, birds

Type 3: Type 3 survivorship includes organisms which have a rapid death rate during the early stages and only a few organisms survive till adulthood.

There are three types of survivorships:

Type 1: Type 1 survivorship includes organisms which have high chances of surviving through the early and middle stages of life. Their population tends to decline in the old age. For example, humans

Type 2: Type 2 survivorship contains organisms which have a constant mortality rate. The chances of an individual to die are independent of their age.For example, birds

Type 3: Type 3 survivorship includes organisms which have a rapid death rate during the early stages and only a few organisms survive till adulthood.

Answer: A). An allele is one form of a gene.

Explanation: An allele is a different form of a gene. Every trait is usually controlled by a pair of gene, each of the gene is called an allele. For instance, height is a trait and the genes that controls height can be represented as T for tall height and t for short height. T and t are alleles. Alleles can be dominant or recessive. A dominant allele is one which is able to express itself outwardly in the presence of a recessive allele while a recessive allele is one whose effect is masked by a dominant allele. A recessive allele can only express itself when it occurs in a homozygous state.

Their atoms have free-floating electrons that easily pass kinetic energy throughout the metal.

Explanation:

The metallic structure of metals allows for delocalized electrons. This means these free electrons can no longer be associated with only one atom in the metallic element but rather the electrons can move freely within the lattice. These electrons can carry with them energy and transmit it within the metal. This is why metals are good conductors of heat and electricity. The more delocalized electrons the metal has (such as Aluminium) the better it is at conducting heat and electricity.

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Answer:

Their atoms have free-floating electrons that easily pass kinetic energy throughout the metal.

Explanation:

just did the quiz

Answer:

The presence of freckles in a individual, or predisposition to have them, is a trait that is inherited with an autosomal dominant pattern, and is not related to sex-linked inheritance.

Explanation:

Freckles are accumulations of melanin in the skin, which form small reddish or light brown spots, predominantly in white-skinned people.

The melanocortin receptor gene undergoes a change that gives rise to a variant - which is phenotypically expressed in the presence of freckles - whose inheritance has been determined to be autosomal dominant.

Under no circumstances is the transmission of the gene that determines the presence of freckles linked to sex, because is an autosomal trait, as is hair, eye or skin color.

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Final answer:

The levels of organization in multicellular organisms include cells, tissues, organs, organ systems, and organisms.

Explanation:

The levels of organization in multicellular organisms are as follows:

Cells: Cells are the basic structural and functional units of living organisms. They are organized into tissues.

Tissues: Tissues are groups of cells that work together to perform a specific function. They are organized into organs.

Organs: Organs are composed of different tissues and perform specific functions in the body. They are organized into organ systems.

Organ Systems: Organ systems are groups of organs that work together to perform complex functions in the body.

Organisms: Organisms are complete living beings made up of multiple organ systems.

Answer:

Competition

Explanation:

Answer:

In biology, the relationship in which one organism lives inside another is described by the term endosymbiosis.

Explanation:

Endosymbiosis refers to a form of association that organisms have, in which one individual lives and performs his functions within another's body -using his resources to survive-  being  called the first symbiont, and the second host.

An example of endosymbiosis is found in bacteria that are part of the intestine of some living organisms, contributing to the process of food degradation.

Additionally, endosymbiosis is relevant in explaining the origin of eukaryotic cells from symbiosis between prokaryotic cells, which is known as endosymbiotic theory.

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Final answer:

Endosymbiosis is the relationship where one organism lives inside another; it is a type of symbiosis. An example is gut microbes producing vitamin K in humans, and it also explains the origin of mitochondria and chloroplasts in eukaryotic cells.

Explanation:

The term that describes the relationship in which one organism lives inside another is endosymbiosis. Endosymbiosis is a type of symbiosis, where organisms from two separate species live in close association with specific adaptations to each other. An example of an endosymbiotic relationship is the microbes that produce vitamin K within the human gut. These microbes benefit humans by synthesizing vitamin K, which we cannot do on our own, while they gain protection and a stable source of nutrients.

Furthermore, the theory of endosymbiosis is significant in explaining the origin of mitochondria and chloroplasts in eukaryotic cells, believed to have formed from a mutually beneficial relationship when host cells ingested aerobic bacteria and cyanobacteria but did not destroy them.

Explanation:

Biology is the study of Life and living organisms. Any person associated with research or scientific studies of living organism is directly related to careers in biology.

Alzheimer's disease is a genetic defect caused in living beings. The genes causing this disease are:

Due to mutation of these genes the nerve cells get damaged and patients begin to show the symptoms usually at the age of 60 and above. The genetic test results can help in early prevention and cure to Alzheimer's disease. Though research is being continued to find if there are more genes involved.

Answer:

Their large surface area aids in nutrient absorption.

Explanation:

The main parts of a fungi's body include long, branched hair-like projections called the filaments and an outer cell wall; chitin. The hair-like projections are also referred as hyphae. A complex group of filaments or hyphae is termed as mycelium .As the filaments increase the surface area of fungi, their basic function is to absorb nutrients from external sources. Enzymes for nutrient absorption are released by the filaments on the substrate and hence the nutrients are absorbed.  

The filaments which are referring to in fungi are called hyphae. The function of these hyphae is to provide a large surface area for efficient nutrient absorption and to anchor the fungus to its substrate.

The filaments of fungi, also known as hyphae, serve a crucial function in the organism's survival. They provide a vast surface area for absorption of nutrients from the environment, allowing the fungi to obtain nutrients from a wide range of sources.

Additionally, the branching network of hyphae allows fungi to penetrate and explore their surroundings, maximizing their chances of encountering nutrient-rich substrates. This unique structure also allows for efficient exchange of gases and helps fungi to spread and reproduce.

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In genetics, curly hair is dominant over straight hair due to the interaction of alleles. The dominant allele for curly hair will 'override' the recessive allele for straight hair. We can predict genetic inheritance using tools like Punnett squares.

The question pertains to genetic dominance, a concept in the field of genetics. Dominance in genetics is the phenomenon where one variant of a gene, called an allele, conceals the presence of a different variant at the same gene locus. For the case of hair type, naturally curly hair is dominant over straight hair because of the effect of the specific gene product, or protein, that the dominant allele produces.

In genetic terminology, we refer to having two of the same allele (for instance straight hair or 'bb') as homozygous, and having one of each (curly hair and straight hair, or 'Bb') as heterozygous. When it comes to dominant traits like curly hair, they will be visibly expressed even if only one parent gene has the dominant allele. Thus, whether an individual has the alleles 'Bb' or 'BB', they will have curly hair due to the dominance of the allele for curly hair.

Using a simple tool called a Punnett square, we are able to predict how genes will interact in producing offspring. By inputting the parental curly and straight hair alleles, it can visually show the odds of expressing a certain trait. But the fact remains that the dominant curly hair trait will be expressed over the recessive straight hair trait because of the natural workings of inheritance and genetics as determined by Mendel's law of dominance.

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