what are the problems and the challenges in classifying living things​

Answer:

O mRNA is made in small quantities in infrequent batches.

Explanation:

mRNA is made in small quantities in infrequent batches because the affinity of positive transcription is lower and affinity of negative transcription is higher which is responsible for production of mRNA from DNA molecule. Transcription is a process in which the information that is present in DNA molecule is copied to new mRNA molecule. Positive transcription factor is a promoter which promotes the initiation of transcription in order to enable RNA polymerase while negative transcription  factor is a repressor protein.

Answer:

Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities.

Answer:

she should experiment the hypothesis made by using a different specie in the same vase and record the changes over time

Answer:

A. She should repeat the experiment with the same type of flower and photograph the changes over time.

None of the options is entirely correct about latitude and climate zone.

Latitude is one of the main factors that affect climate, along with elevation, ocean currents, and prevailing winds.

Generally, the farther away from the equator a location is, the colder its climate is. This is because the angle of the sun's rays hitting the Earth's surface is more oblique at higher latitudes, resulting in less heat being delivered per unit of surface area.

However, precipitation patterns are not solely determined by latitude. They are also affected by other factors such as prevailing winds, ocean currents, and topography. For example, areas located on the windward side of a mountain range tend to receive more precipitation than those on the leeward side, regardless of their latitude.

Therefore, while latitude is an important factor in determining climate zones, it does not fully determine precipitation patterns or temperature.

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Answer:

primary waves

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Answer:

Answer:

You must always use two hands.

Explanation:

Using two hands provides more stability when carrying the microscope. So that would lower the chances of damaging the scope. Yw >:)

This is because fats are insoluble in water and therefore are more difficult to digest than any other nutrients. They also present as large globules.

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Answer:

Fats take longer time to digest than carbohydrates. Fats can't be digested easily as its insoluble in water and are presented as large globules. The bile juice that gets secreted breaks down the fat from bigger droplets into smaller ones.

Answer:

Hope it helps

Explanation:

plants flower as days grow shorter (and nights grow longer) after 21 June in the northern hemisphere, which is during summer or fall. The length of the dark period required to induce flowering differs among species and varieties of a species.

Answer: ARGON LASER

Explanation: An Argon laser is a type of unique laser system that was invented in 1964,it is unique because it uses a noble gas (ARGON) as it's active medium. Argon laser functions by emitting a colored light of blue/green,this light is being absorbed by haemoglobin present in blood cells,the heat produced gives room/allows the laser to close up cells of blood that are ruptured.

The invention is the printing press in the 1400s revolutionized the way knowledge could be spread. The correct option is C.  

A printing press is a place where paper is printed. The printing press was invented in 1400 in France. Before it, there was no printed paper. The printing press started the newspapers and pamphlets and other papers. Printing presses are of many use in different sectors.

In the 1400, the revolutionized way of information and knowledge 1400 was the printing press. Starting a printing press will print books and papers, which was good for the knowledge of the citizens.

Thus, the correct option is C. The printing press.

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Answer:

Something that can be tested, or rationalized.

Explanation:

You didn't give any statements to choose from, so I'll give you a rule of thumb. When finding a scientific statement, make sure it's something like "The tide is higher at noon than it was at 3 am." and not "Your dog is itchy, so that means a bad storm will arrive."

Answer:

B. On a flat, vacant plot in the outskirts of the city

Explanation:

Fracking, also known as hydraulic fracturing is a drilling method used in the oil and gas industry of most countries. It is the process whereby natural gas and petroleum is extracted from deep down the Earth. A crack is made in the rock layers, followed by the injection of a liquid called fracking liquid, which is usually water, at a very high pressure.

The process of fracking has serious environmental side effects e.g. release of harmful gases, noise pollution, water contamination etc. and hence, when choosing a fracking site, environment's sustainability and safety of people should be taken into account. This is why a fracking site cannot be designed in a residential city or around a neighborhood. The site should rather be designed in a location where it would pose a minimal environmental threat to the people e.g flat, vacant plot in the outskirts of the city

Answer:

1 and 11

Explanation:

The five abiotic factors are sunlight, temperature, water, oxygen, and soil.

Plants represent biotic factors.

"A biotic factor is a living organism that shapes its environment. Example: plants, animals, microorganisms."

"An abiotic factor is a non-living part of an ecosystem that shapes its environment. Example: sunlight, air, soil, water, etc."

The basic components of the environment are

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Weight loss and dry skin and eyes are few of the symptoms of that disease

Answer:

the symptoms of marasmus are:

I hope this helps

Answer:

The correct answer is - operation of reflex arc.

Explanation:

The reflex arc is a unique and special type of neural pathway that starts with a sensory neuron and ends with a motor neuron. In this operation sensory neuron acts as the receptor and motor neuron is effector. This type of neural circuit helps in faster response.

Voluntary muscles like quadriceps muscle are normally in control voluntarily however, such muscle may contract involuntary due to reflex arc. This type of contraction takes place before the signal has even reached the brain.

In this response the sensory neuron takes the signal to the spinal cord and then motor neuron to the effector muscle for faster response.

Thus, the correct answer is - operation of reflex arc.

Answer:

Erosion is the geological process in which earthen materials are worn away and transported by natural forces such as wind or water.

Answer:

Explanation:

Hydrogen bond is an intermolecular force of attraction, it occur between a proton in a molecule and an electronegative atom in the another. It is weak bond and can be found in water molecule.

Cohesion is force of attraction thst occur when molecules are attracted to other molecules of the same type

this can be found in hydrogen bonding.

Adhesion occur when molecules are attracted to different substances. It can be founf in water when reaction with other substance

A universe solvent is a substance that is used to dissolves many substance. Example is water it can be used in dissolving many substance.

Surface tension is the ability of a liquid surfaces to reduce into the minimum surface area. It allows some insect that are less dense to float in water

Head of vapourization is the amount of heat required to change a liquid into a vapor. Heat to convert water into vapour

Answer:

pH

Explanation:

"The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution. The letters pH stand for 'power of hydrogen' and numerical value for pH is just the negative of the power of 10 of the molar concentration of H+ ions."

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Answer:

y enzyme is Invertase

Explanation:

Invertase is the enzyme that catalyses the hydrolysis of sucrose into glucose and fructose.

Answer: Scientific theories can be backed up with evidence/data (the evidence that backs the theory isn't common knowledge to everyone yet), while a hypothesis is just an educated guess, meaning that you are making a prediction based on something already known.

They are both similar in the sense that they are questions that are answered by facts, but theories are answered with factual evidence rather than factual reasoning (hypothesis).

Answer

answer with the help of this

Explanation:

Answer:

an alkali also can be defined as a base that dissolves in water. a solution of soluble base has a pH greater than 7.0. the adjective alkaline is commonly, an alkalescent less often, used in English as a synonym for basic, especially for bases soluble in water.

Answer:

Our body is constitute of several essential molecules such as proteins, fat, carbohydrate, water, and other molecules.

Each molecule has some of the impact of other molecules in the body. Impact of water and other molecules on proteins inside the body are as follows:

Answer:

option A is correct

Explanation:

Answer:

A.

please let me know how helpful is it

Answer:lack of blood flow and blood concentration

Explanation:

Answer:

Observation

Problem question

Organize data

Hypothesis

Experimentation

Analyze data and and draw conclusions

Report results

Explanation:

Answer:

frog is the best answer

Explanation:

The cell theory, or cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology. The idea predates other great paradigms of biology including Darwin’s theory of evolution (1859), Mendel’s laws of inheritance (1865), and the establishment of comparative biochemistry (1940).

First Cells Seen in Cork

While the invention of the telescope made the Cosmos accessible to human observation, the microsope opened up smaller worlds, showing what living forms were composed of. The cell was first discovered and named by Robert Hooke in 1665. He remarked that it looked strangely similar to cellula or small rooms which monks inhabited, thus deriving the name. However what Hooke actually saw was the dead cell walls of plant cells (cork) as it appeared under the microscope. Hooke’s description of these cells was published in Micrographia. The cell walls observed by Hooke gave no indication of the nucleus and other organelles found in most living cells. The first man to witness a live cell under a microscope was Anton van Leeuwenhoek, who in 1674 described the algae Spirogyra. Van Leeuwenhoek probably also saw bacteria

The cell theory, states that all organisms are composed of similar units of organization, called cells.

The concept of cell theory was in 1839 by Schleiden & Schwann which leads the foundation of modern biology. Cell theory states that every cell is generated from another preexisting cell.

This idea makes the great revolution in biology including Darwin’s theory of evolution (1859), Mendel’s laws of inheritance (1865), and the establishment of comparative biochemistry (1940).

Schleiden & Schwann propose every organism is composed of the cell, which is the basic unit of life and each cell comes from the preexisting cell, and each cell produces a progeny which is similar to its parent cell.

Therefore, cell theory states the existence of the cell in the organism.

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