Which is the correct sequence of events in the nitrogen cycle?
A)
soil nitrogen-animals-plants-fun
atmospheric nitrogen--bacteria- plants-animals
soil nitrogen atmospheric nitrogen-plants-animal
atmospheric nitrogen- plants-animals-Soil nitrogen

Answer:

Animals need resources to survive.

Explanation:

With a lack of enough resources for various animals, it generates competition for resources and eventually animals will start to starve and die off.

Answer:

The answer is c, becuase the seeds will get caught in the birds feathers, the bird will carry the seeds and the seeds will pollinate everywhere

Explanation:

Final answer:

A bird getting seeds stuck in its feathers as it moves around the woods (Option C) is the correct answer, as this represents a form of external seed transportation and dispersal.

Explanation:

The correct answer that represents an animal actively involved in seed dispersal is: C. a bird getting seeds stuck in its feathers as it moves around the woods

This is because animals and birds can spread seeds in various ways. One such way is through external transportation, where seeds stick to the animal's fur or feathers. The seeds can then be transported to different locations, increasing the geographic range of the plant species. For example, some fruits, like the cocklebur, have hooks or sticky structures designed to adhere to an animal's coat.

Other methods of seed spreading include animals burying seeds like squirrels stashing away acorns, which may later germinate if the animal forgets its cache. Moreover, when animals and birds consume fruits and the seeds pass through their digestive system undigested, they can be excreted in their droppings, sometimes far from the original source, leading to the spread of seeds.

Reproductive isolation leads to speciation because it prevents the exchange of genes between two distinct populations of organisms.

This implies that mutations can happen independently in the two populations, resulting in differences in each group that do not exist in the other.

When a species of bird experience reproductive isolation, for instance, if one bird began hunting at night rather than during the day and eventually began to live at night.

According to the biological species idea, this causes distinct features to be selected for in the night bird population compared to the day bird population.

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Answer:

Your answer would be intrusive

Answer:

intrusive

Explanation:

the person that answered first is correct so give them brainleist plz

Answer:

photosynthesis

Explanation:

carbon dioxide + water+ light energy -> oxygen + glucose

Answer:

photosynthesis

Explanation:

It important that the  substance DNA is placed in for  electrophoresis be porous because,

DNA are placed in the electrophoresis gel, so that the pores present can limit or check the movement of the DNA by creating a surrounding in which individually DNA fragment rate of motion can vary based upon their length. The gel is nothing but a permeable matrix. The motion of charged molecule defined as the migration. The molecules migrate towards the opposite charge. The molecule having negative charge will be attracted towards the positive charge.

The porous substance in electrophoresis facilitates movement of charged particles, ensuring accurate separation based on size or charge differences.

It's important for the substance used for electrophoresis to be porous because electrophoresis relies on the movement of charged particles through a medium under the influence of an electric field. Porous substances allow the charged particles, such as DNA fragments, to move through the medium more easily, facilitating separation based on size or charge. If the substance were not porous, the movement of charged particles would be hindered or even prevented, resulting in inaccurate or incomplete separation during electrophoresis. Thus, the porosity of the substance ensures efficient and effective separation of DNA fragments based on their size or charge differences.

Answer:

species

Explantion:

Answer:

species

Explanation:

Answer:

The changes occurring in the peppered moth population is one of the most important studies which show the Darwin's proposed phenomenon of natural selection.

Before the industrial revolution, very rare black peppered moth existed. There were mostly light-coloured peppered moths. The colour of moths at that time was best to help them escape from predators. They were able to blend in with light coloured lichens and tree barks and escape from their predators.

But with the industrial revolution, the colour of the trees became darker due to the emission of dust and other gases. With the passage of time, it was seen that the peppered moth began changing its colour into a dark type. The black coloured moths were better able to survive now, hence these type of moths reproduced and increased in population. Whereas, the population of the light coloured moths declined. It was also observed that the allele for dark colour was dominant over the light colour. Hence, the change of colour evolved rapidly.

Answer:

Pretty sure it is Bedrock my good fellow.

Explanation:

The substance that is a natural land resource used in construction is clay. The correct option is C.

Clay is a kind of soil that is composed of mineral particles that are fine and dense. The properties of clay are influenced by its mineral content, and it is generally used in building because of its versatility and low cost. It can be used to make bricks, tiles, and other building materials.

Clay soil is the natural land resource which is used widely in the construction.

Clay is used as an additive in mortar and plaster in addition to being a primary building material. Clay soil is sometimes used to fill in low spots or pits around homes, as well as in landscaping and gardening. So, the correct answer is clay.

Therefore, the correct option is C.

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Binding organs and tissues together

It is evident from the image that the tissue is mainly made up of fibers (appear like collagen fibers) and very little cells. This is a major characteristic of connective tissues. This type of issue is mainly found in location such as between organs and skin, joints.

Explanation:

The image specifically shows a dense and regular connective tissues due to the high density of the fibers and their parallel arrangement. This type of connective tissue is found in areas of high stress such as tendons and ligaments that experience high tension.

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Answer:

I think E is Cytoplasm

Explanation:

sorry if it is wrong i learned this 4 years ago so I'm a little rusty.

The labelled E in the structure is cytoplasm.

The cytoplasm is the gel-like fluid inside the cell. It is the medium for chemical reaction. It provides a platform upon which other organelles can operate within the cell. All of the functions for cell expansion, growth and replication are carried out in the cytoplasm of a cell.

Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus.

The cytoplasm is responsible for holding the components of the cell and protects them from damage. It stores the molecules required for cellular processes and is also responsible for giving the cell its shape.

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Answer:

Both plants and animals fight pathogens with the help of Antibodies

Explanation:

It is also referred as the immunoglobins, they are of Y shaped. Generally they are proteins that has been produced by the plasma cells which are being used by the immune system so as to neutralize pathogens like bacteria as well as virus. They are helpful in fighting with the germs but at times it starts acting against the bodies healthy cell these also reduces the person’s immune system. There is a test that checks how the antibody is working against the red blood cells i.e. Coombs test. Antibodies can be found in the body fluid as it moves through the bloodstream.

Answer:

Throat.Thyroid plays a major role in metabolism,Thymus plays a vital role in producing white cells which help to fight off disease and. in increasing immunity.Parathyroid is vital in producing calcium.

Answer:

the land become populated

Answer:animal habitats become fragmented

Explanation:

Answer:

Except in some viruses, genes are made up of DNA, a complex molecule that codes genetic information for the transmission of inherited traits. Alleles are also genetic sequences, and they too code for the transmission of traits. ... The short answer is that an allele is a variant form of a gene.

Explanation:

It says write your own. I think it would be better for you to make it but here

Answer:

They all include on what you have as a dominant trait.

Explanation:

Answer:

a, c, d

Explanation:

A dolphin's flipper, a bird's wing, a cat's leg, and a human arm are considered homologous structures, so other structures that are like these can be considered homologous.

The pairs that have homologous structures are

a. Wing of an insect and wing of a bird.

c. The front leg of an insect and bones in the leg of a human.

d. Bones in the front leg of a dog and bones in the wing of a bat.

Homologous organs are those organs that have similar functions, but they have different structures, and they are very different organisms. Their time of evolution is also changed and different.

A wing of an insect and the wing of a bird are very different. The wing of a butterfly is made of a thin layer with veins and a bird's wings are made up of feathers, and they are bigger than a butterfly. But their functions are very similar.

So the front leg of an insect and bones in the leg of a human and bones in the front leg and wings of a bat have similar functions.

Thus, the correct options are a, c, and d.

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Answer:

meiosis you will have four haploid cells (half the number of chromosomes is a diploid cell) and after mitosis you will have two diploid cells

Explanation:

Mitosis you begin with a parent cell that is haploid, it copies all it's chromosomes and splits so each daughter cell have the same number of chromosomes as the parent cell so both being diploid

In meiosis the chromosomes fold over DNA and are put in pairs, in the first division the pairs are split up evenly into two cells randomly (diploid still) but the the cells split the chromosomes in half in them creating four grneticly different haploid cells

Mitosis and meiosis are the two types of cell division. In mitosis, the parent cell forms two daughter cells that are genetically alike and have the same number of chromosomes.

Therefore, in mitosis, you will get two diploid daughters and in meiosis, you will get four haploid daughter cells.

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Answer:    The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs

Answer:

The sun provides us energy from a process called nuclear fusion

Explanation:

Fusion heats the sun so the sun can give us energy.

Explanation:

Bacteria usually divides by fission. This produces offspring that are the exact copies of the parent unless a mutation occurs in the offspring.

Occasionally, however, bacteria cells exchange genetic material through conjugation. This exchange is akin to crossing over in higher organisms, result in genetic recombination of the bacterial DNA. This increases genetic diversity of the bacteria cells in the population. This genetic diversity improves the population's success in adapting to changes in the environment.  

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Water's polarity and unique properties, such as high heat capacity and heat of vaporization, enable individual water masses within the oceans to retain distinctive physical properties for long periods.

Water's polarity allows for the formation of hydrogen bonds between adjacent water molecules, resulting in many unique properties that are critical to maintaining life. For example, water is an excellent solvent because hydrogen bonds allow ions and other polar molecules to dissolve in water. Water's hydrogen bonds also contribute to its high heat capacity and high heat of vaporization, resulting in greater temperature stability. Hydrogen bond formation makes ice less dense as a solid than as a liquid, insulating aquatic environments. Water's cohesive and adhesive properties are seen as it rises inside capillary tubes or travels up a large tree from roots to leaves. The pH or hydrogen ion concentration of a solution is highly regulated to help organisms maintain homeostasis; for example, as will be explored in later chapters, the enzymes that catalyze most chemical reactions in cells are pH specific. Thus, the properties of water are connected to the biochemical and physical processes performed by living organisms. Life on Earth would be very different if these properties were altered—if life could exist at all.

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Answer AND Explanation:

pH refers to the acidity or alkalinity of a substance. Most enzymes have an optimum pH close to 7 which is the intracellular pH. If the pH changes from the optimum for an enzyme, the rate of enzyme activity decreases. Extreme changes of pH denatures the enzyme.

When the substrate concentration is increased, the rate of an enzymatic reaction also increases up to a maximum level. Further increase in substrate concentration does not result in an increase in the rate of reaction because all the active sites of an enzyme are occupied.

Answer:

Not all of the DNA codes for proteins. Infact, majority of the DNA is non- coding. Hence, it is more reliable to convert the DNA into only the coding form i.e mRNA for translation or making of proteins.

The DNA itself cannot travel through the nuclear pores. Hence, converting it into mRNA is necessary.

The process of protein synthesis occurs in the ribosomes. Hence, it is necessary that an mRNA might be present to transfer information of the DNA into the ribosomes for protein synthesis.

Transcription and translation are two separate but necessary steps for protein synthesis because they allow for additional regulation and proofreading of genetic information, and they accommodate the different natures of DNA and RNA.

The process of protein synthesis involves converting the genetic information encoded in DNA into functional proteins. This process is divided into two main steps: transcription and translation. Here's why these steps are separate and necessary:

1. Different Nucleic Acids: DNA is a double-stranded molecule that resides in the nucleus (in eukaryotes) or nucleoid (in prokaryotes), while proteins are synthesized in the cytoplasm (in eukaryotes) or on the ribosomes attached to the cell membrane (in prokaryotes). The intermediate RNA molecule, specifically messenger RNA (mRNA), serves as a mobile copy of the genetic information that can be transported out of the nucleus to the ribosomes where translation occurs.

2. Regulation and Processing: Transcription allows for the regulation of gene expression. Various factors such as transcription factors, enhancers, and silencers can modulate the expression of specific genes. Additionally, the primary mRNA transcript undergoes processing, including the addition of a 5' cap, splicing to remove introns, and the addition of a poly-A tail, which are critical for the stability and transport of mRNA, as well as the efficiency of translation.

3. Proofreading and Repair: Transcription includes proofreading mechanisms that can correct errors in the mRNA before it is translated into a protein. This reduces the likelihood of producing defective proteins, which can be detrimental to the cell.

4. Different Codes: The genetic code in DNA is read as codons, which are sequences of three nucleotides. During transcription, the DNA codons are transcribed into RNA codons. However, the RNA codons are complementary to the DNA codons, not identical (for example, the DNA codon TTA would be transcribed into the RNA codon AAU). This is because RNA uses uracil (U) instead of thymine (T) as found in DNA.

5. Ribosome Binding: The mRNA has special sequences that are recognized by the ribosome, such as the Shine-Dalgarno sequence in prokaryotes and the 5' cap in eukaryotes, which are necessary for the initiation of translation.

6. Different Molecular Machineries: Transcription is carried out by RNA polymerases, while translation is performed by ribosomes and transfer RNAs (tRNAs). These molecular machines have different structures and functions, which necessitate separate steps.

In summary, the separation of transcription and translation allows for a more controlled, accurate, and regulated process of gene expression, ensuring that the correct proteins are produced at the right time and in the right place within the cell.

6 Ways GMOs Impact Society

1. GMOs provide economic benefits to millions of consumers.

While the cost of food is impacted by various factors (the price of oil affects transportation costs; temperature changes can cause drought; etc.), GMOs play an important role in keeping those prices as low as possible. It’s estimated that corn-based products would be priced 6 percent higher and soybean-based products would be 10 percent higher if GM crops were not grown, according to a 2010 study by Graham Brookes et al.

2. GMOs reduce agriculturally related greenhouse gas (GHG) emissions.

Agricultural economist Graham Brookes reports:

“GMOs have helped farmers reduce their environmental footprint by allowing them to use fewer inputs and enabling a shift to reduced tillage. These practices have led to less time spent on a tractor, less fuel used and fewer emissions. As a result, GMOs have helped reduce CO2 emissions equivalent to removing 12.4 million cars from the road for one year. They have also led to 1.2 billion pounds less pesticides being used between 1996 and 2013.”

3. GMOs reduce soil erosion.

Herbicide tolerant (HT) crops enable more farmers to adopt conservation tillage because they help farmers to more effectively and efficiently control weeds at a lower cost than comparable conventional cropping systems. Florida farmer Lawson Mozley explains that with herbicide tolerant GM crops, weeds can be sprayed and left in the field to protect the soil. Then the incoming crop is planted directly into the leftover organic matter, without turning over the soil.

4. GMOs conserve water.

Farmers utilize many tools to conserve water, including drip irrigation systems and conservation tillage practices. GMOs provide another tool that farmers can employ to help conserve water. Herbicide tolerant GM crops along with conservation tillage aid in soil moisture retention, which can reduce the need to irrigate. But, GMOs can help reduce water use in another way – drought tolerance. This GM trait can help crops cope with stress and yield more when periods of drought occur– without supplemental water from irrigation.

5. GMOs substantially decrease the use of many agricultural chemicals.

A common misconception is that the adoption of GM crops have increased the use of pesticides, when just the opposite is true. Overall GM crops, including crops with the “Bt” (Bacillus thuringiensis) trait for insect resistance, have contributed to a 37 percent decrease in pesticide applications. Learn more about some GMOs have led to the reduction in pesticide.

6. GMO technology also has potential to improve the lives of millions in the developing world.

Jim Gaffney, Strategy Lead for Biotech Affairs and Regulatory at DuPont Pioneer, provides this insight on the role of GMOs in society:

Moderator for GMOAnswers.com

Thursday, 25/02/2016 18:16

As Kurt Bradford points out in this response to another question on this site:

“Human society is supported by its ability to produce sufficient food for the total population while at the same time not using up or degrading the capacity to continue to produce that amount of food in the future.”

GMOs support society by producing safe and abundant crops while conserving natural resources. Cecilia Chi-Ham, Director of Science & Technology at PIPRA, also provides insight into how GMOs impact society. GMOs have a variety of impacts on society – and really, there are too many to name – so instead, we’ll explore the 6 main ways GMOs impact society.

6 Ways GMOs Impact Society

1. GMOs provide economic benefits to millions of consumers.

2. GMOs reduce agriculturally related greenhouse gas (GHG) emissions.

Agricultural economist Graham Brookes reports:

3. GMOs reduce soil erosion.

4. GMOs conserve water.

5. GMOs substantially decrease the use of many agricultural chemicals.

6. GMO technology also has potential to improve the lives of millions in the developing world.

GMOs provide benefits including increased production yields, reduced pesticide use, and nutrient-rich crops that can address malnutrition.

GMOs have become an integral part of agriculture and food production, providing a range of benefits to society. Some of the key advantages include:

However, it's essential to proceed with caution, as there are concerns about the unknown and unintended consequences of GMOs, such as potential hybridization and invasiveness. These concerns necessitate thorough studies and environmental impact assessments to ensure that GMO usage is safe for both ecosystems and human health.

Answer:

The thylakoid membrane

Explanation:

Answer:The sperm is a gamete, which means it is a haploid cell.  Thus, the nucleus will contain half the number of chromosomes the other body cells contain.

Explanation:

The difference between the nucleus of a sperm cell and the nucleus of body cells is :  The nucleus of the sperm cell contains one set of chromosomes while the body cells contains two sets of chromosomes in its nucleus

The sperm cell ( gamete ) is a haploid cell therefore it contains only one set of chromosomes, in its nucleus while other body cells ( diploid cells ) contain two sets of chromosomes in their nucleus.

For example ;  The Somatic cells ( diploid cell ) contains 46 chromosomes in its nucleus while the human sperm cell ( haploid cell ) contains 23 chromosomes in its nucleus.

Hence we can conclude that the difference between the nuclei of sperm cell and body cells is the number of chromosomes they contain

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Answer and Explanation:

monocotyledons                                                dicotyledons

        distributed within the stem                       concentrically arranged

       pores.                                                           pore.

The adhesion and cohesion property of the water helps a plant to thrive.

Explanation:

The adhesion and cohesion property of the water is the two most important properties of water that regulate how water will work at different places of a plant. When water gets attracted to water then we can call it cohesion.

When water gets attracted to other substances then we can call it adhesion. In different part of the plants like roots, stem and leaves water reaches there by capillary action and works differently based on adhesion and cohesion property

Answer:

studying the genotype of the organism

Explanation:

In order to classify two organisms that are similar in appearance and environment is to study each organism's complete set of genes or genotype.

Answer:

use the classification system that may help

Explanation:

Answer:

D.

Explanation:

The data set has no correlation and cannot be accurately represented with a linear equation.

there seems to be no relation between the numbers

if you know the x value, you can't really guess what its y value is (no correlation)