The first organisms to appear on Earth did not need?
a. oxygen.
cells.
b. nitrogen
d chemicals
C
Please select the best answer from the choices provided
Ο Α
B
C

mitosis refers to the parts of the original nucleus into two nuclei. On the other hand, meiosis refers to each having half chromosomes of the original cell.

in mitosis, there is the maintenance of chromosomes takes place while meiosis leads to a reduction in the no. of chromosomes. There are no variations in mitosis and variants occur in meiosis.

hence at last we can say that the above are the major difference between mitosis and meiosis. All of the explained differences will clearly lead to identifying them in particular. mitosis and meiosis plays a vital role in formation of gametes.

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Answer:

Homologous structures refer to structures that have the same origin but differ in form or function, while analogous structures are those that are similar in form or function but developed independently.

Homologous structures refer to structures that have the same origin but differ in form or function, while analogous structures are those that are similar in form or function but developed independently.

Organs or skeletal components of animals and organisms that, by virtue of their similarity, suggest a connection to a common ancestor are known as homologous structures. These structures need not all look the same or serve the same purpose.

The forelimbs of vertebrates are a common illustration of homologous structures. The forelimbs of four-legged vertebrates like dogs and crocodiles, the arms of primates, the front flippers of whales.

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Answer: A is talking to me try it

Explanation:

Answer:

A) canyons

Explanation:

When recording euthanasia be sure to note the date, animal identification information, confirmed or tentative diagnosis, euthanasia method and final disposition.

The euthanasia record is an important document for veterinary practices and should be maintained according to state and federal regulations and the policies and procedures of your practice.

When recording euthanasia, be sure to note the date, animal identification information, confirmed or tentative diagnosis, euthanasia method, and final disposition.

Another important thing to note is that euthanasia should be considered only when alternative management options are not available or have been exhausted, when quality of life is poor, and when euthanasia is in the best interest of the animal.

All reasonable steps should be taken to minimize pain and distress during the process.

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Human microbiome that is as complex entity of all the microorganism found in the entire body structure of all living organism and the exact location where they are found.

Fecal transplants is idea for replenishing of good bacteria in the body due to resistance from prolong use of antibiotics. It is specifically for treatment of resistance of antibiotic therapy due C. difficile colitis.

In patient  above 65, infected with  C. difficile colitis and  with resistance to antibiotic especially oral vancomycin, fecal transplant is applied to  effectively cure this.

The transplant is conducted through the Colonoscopy. Where the fecal is discharge into the colon  as the Colonoscope is withdrawal from the colon

.

Since natural  good bacteria are present  in fecal and have no effect on the good bacteria in the body, this procedure increased the total number of bacterial(microbiota),by stabilizing the the microbiome and curing the patients.

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The correct answer is B. A theory is why something happens and a law is how something happens.

Explanation

A scientific theory is a way of describing why chemical and physical phenomena originate. An example of this can be the theory of Charles Darwin on the Evolution of species. In this theory, Darwin set out to explain why the evolution of species and what influenced this development. On the other hand, a scientific law is a description of how some of the phenomena of nature occur. For example, Isaac Newton's Law of Universal Gravitation was intended to describe the gravity. From the above, it can be inferred that the correct answer is B. A theory is why something happens and a law is how something happens.

XOR(B4=12;C4<9) and =AND(B4=12;C>9) return TRUE, if the value in cell B4 is 12 and the value in C4 is 29.

An =XOR function returns TRUE if any of the clauses in it are true, while an =AND function returns true only if both are true. Therefore, since in =XOR(B4=12;C4<9) B4 does equal 12, since this is an =XOR function. =AND(B4=12;C>9) is correct because B4 = 12 and C4 is greater than 9. if the value in cell b4 is 12 and the value in c4 is 29? and return true, if the value in cell b4 is 12 and the value in c4 is 29. XOR(B4=12;C4<9) and =AND(B4=12;C>9) return.

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Answer:

C. a carboxyl group

Explanation:

The functional group is from the carboxyl group - carboxylic acid also has the general formula - R−COOH or R−CO2H.

Based on what causes cancers, it can be concluded that HPV infection causes changes in the DNA of affected individuals resulting in cancer.

The human papilloma virus HPV, is a virus that causes warts on hand and feets.

It has been established that HPV infection increases the incidence of cancers.

Cancers are caused by mutations in DNA.

Therefore, it can be concluded that HPV infection causes changes in the DNA of affected individuals resulting in cancer.

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Answer:

A. Cells infected with HPV divide more frequently

Explanation:

HPV infects the cells and changes the setup of the cells division process, thus resulting in the cell dividing more frequently, and most likely becoming cancerous.

Hope this helps!

Based on the bands of the gel electrophoresis;

Gel electrophoresis is a molecular biology technique used to separate macromolecules such as DNA, RNA, and proteins.

Based on their size and charge, DNA fragments (or other macromolecules, such as RNA and proteins) are separated using the gel electrophoresis process.

In a technique, when a sample has similar bads to a control, the sample is usually identified as similar to the control.

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Answer:

Cell theory- all living things are made of one or more cells,that cells are the basic unit of life,and that cells come only from other cells

Explanation:

It would be the first one because a cell theory is that all living things are made of one or more cells

Calderón-Garcidueñas has conducted research on the impact of air pollution on the brain and cognitive function. Other scientists in Germany and Boston have also conducted studies that support her work and findings.

In Germany, a group of researchers conducted a study to investigate the effects of air pollution on brain structure and cognitive function in a large population of older adults. The study utilized neuroimaging techniques to assess brain volumes and cognitive tests to evaluate cognitive performance. The findings revealed a significant association between long-term exposure to air pollution and reduced brain volume in regions related to memory and learning. The study also found that higher levels of air pollution were associated with poorer cognitive performance in various domains.

In Boston, researchers focused on the impact of air pollution on children's brain development. They conducted a study involving a cohort of children and assessed their cognitive abilities using standardized tests. The study found that children exposed to higher levels of air pollution exhibited lower cognitive scores, particularly in areas related to attention, memory, and language skills. The researchers also observed structural changes in the brain, specifically in regions involved in cognitive control, in relation to air pollution exposure.

These studies from Germany and Boston provide additional evidence supporting Calderón-Garcidueñas' findings regarding the detrimental effects of air pollution on the brain and cognitive function. They reinforce the notion that long-term exposure to air pollution can lead to structural changes in the brain and have a negative impact on cognitive abilities. The collective findings highlight the importance of addressing air pollution as a public health concern and implementing measures to reduce pollution levels to safeguard brain health and cognitive development, particularly in vulnerable populations such as children and older adults.

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Answer:

the answer to your question is prophase 1 the top answer

Explanation:

I know I'm right because I had to do this in school helping my son and I remember exactly what the question was and I got it right would you please give me brainiest and add me and if you ask questions I'll help you more and more I'm too away from moving up one I really could use it and every answer I give is 99% right and I know this is right.

in prophase 1 tetrads of homologous chromosomes form and crossing over occurs add me as a friend and I'll try to help you out with more answers please give me brainiest

Answer:

Adrenal and pancreas

Explanation:

they both are responsible for regulating sugar levels in the bloodstream

hope it helps

Introducing the Organ System Campaign - advocating for the health and well-being of your body's organ systems!

Our goal is simple - to raise awareness about the importance of taking care of all your body's organ systems. Each organ system plays a vital role in keeping your body functioning properly, and neglecting any one of them can have serious consequences for your overall health.

From the circulatory system, which pumps blood and oxygen to your organs and tissues, to the respiratory system, which brings in oxygen and expels carbon dioxide, to the digestive system, which breaks down food and absorbs nutrients, every system is crucial.

Our campaign will focus on educating people about healthy habits, such as eating a balanced diet, staying hydrated, getting enough exercise, and getting regular check-ups with your doctor. We want to empower individuals to take control of their health and make choices that benefit their body's organ systems.

Join us in the fight for healthy organ systems - because a healthy body is a happy body!

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Answer: electron negative outside less than one amu

nuetron none inside one amu

protons positive inside one amu

2. nuetrons 2.0026

Explanation:

ssrrryyy i did all the things i could

Answer:

6:52 PM as of right now

Explanation:

Fort Knox Kentucky uses eastern standard time, or (GMT-4) time.

Answer:

It's 6:52 my guy...Brainliest???

Explanation:

Answer:

Explanation:

A

multipotent (able to give rise to multiple cells within a lineage), pluripotent (able to give rise to all cell types in an adult) and totipotent (able to give rise to all embryonic and adult lineages

Marshall can use automobile insurance to pay for the damage to both vehicles.

What is an automobile insurance?

Automobile insurance is specifically designed to provide coverage for accidents involving cars, trucks, and other motor vehicles. It can provide financial protection against a range of risks, such as property damage, liability for bodily injury, and collision or theft of the insured vehicle. In this case, if Marshall has automobile insurance, he may be able to file a claim to cover the costs of repairing or replacing both his car and the SUV that he rear-ended.

What is SUV?

SUV stands for "Sport Utility Vehicle". It is a type of vehicle that combines elements of a traditional passenger car with features of a larger off-road vehicle. SUVs are designed to offer a more rugged and versatile driving experience, with higher ground clearance, all-wheel or four-wheel drive, and a spacious interior that can accommodate passengers and cargo. SUVs come in a variety of sizes, from small crossover SUVs to full-size SUVs that can seat up to eight passengers.

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The population density of the 900 sheep in the given plot of land is 150 sheep per square kilometer.

The population density of 900 sheep in a plot of land that is 3.00 km by 2.00 km can be calculated by dividing the total number of sheep by the area of the land.

First, we need to calculate the area of the land. The area can be found by multiplying the length and width of the plot of land:

Area = length × width = 3.00 km × 2.00 km = 6.00 km²

Next, we divide the total number of sheep by the area to calculate the population density:

Population Density = Total number of sheep / Area = 900 sheep / 6.00 km²

Performing the calculation, we find:

Population Density = 150 sheep/km²

Therefore, the population density of the 900 sheep in the given plot of land is 150 sheep per square kilometer.

Population density is a measure of the number of individuals (in this case, sheep) per unit area. By dividing the total number of sheep by the area of the land, we obtain the population density in terms of sheep per square kilometer. In this case, the population density is 150 sheep/km², indicating that there are, on average, 150 sheep within each square kilometer of the land.

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Bào tử sinh ra trong túi, khi chín, bào tử được giải phóng ra bên ngoài, là hình thức sinh sản bằng:

A. Bào tử đốt

C. Bào tử nang

D. Bào tử tiếp hợp

B. Bào tử đính

Nó sẽ là lựa chọn A và D nhưng nếu nó chỉ cho phép bạn một lựa chọn thì A.

Bởi vì các bào tử sinh sản và có một cách tự vệ và đó là bằng cách châm chích. Và có hàng ngàn bào tử trên khắp môi trường của chúng ta.

Answer:

Due to tolerance against antibiotic.

Explanation:

The increased rate of mortality occurs in the pigs due to the bacteria which gets tolerance against the antibiotics. The regular use of same antibiotic kills most of the bacteria but in some bacteria mutation occurs that produces tolerance against the antibiotics and there is no effect of antibiotics on then and they are able to cause infection in the organism that leads to death. So the use of same antibiotics is not good for the pigs, the pig farmer should apply different type of antibiotics due to which the bacteria has zero tolerance.

Answer:

I'm confused as to what it is you are asking like are you asking or telling because I cant tell

Explanation:

Answer:

Cork formation is a type of secondary growth that occurs in the stems and roots of woody plants. Gum formation, on the other hand, is a type of defense mechanism that occurs in response to injury or infection.

Explanation:

Answer:

The sloth fossils were much larger than the living sloths

Explanation: