two students were testing the amount of fertilizer that would best promote the growth of strawberries in a garden. which of the following could be a unavoidable source of experimental error ?
A. Length of study
B. Variation in the strawberry plants
C. The cost of watering plants
D. Fertilization during the study

Answers

Answer 1
B, variation in the strawberry plants
Answer 2
Answer:

The correct option is B. Which is variation in the strawberry plants.

Explanation:Unavoidable source of experimental error is the error which is not personal and which can not be minimized.It is present naturally.Now one can change the Length of study, the cost of watering plants  and fertilization during the study.The only factor cannot be changed is the variation in strawberry plants.


Related Questions

What is the basic building block of life

Answers

I'm pretty sure it's Cells

Cells are the basic building block of life.

Which form of energy increases when a spring is compressed? A. chemical potential energy B. elastic potential energy C. kinetic energy D. radiant energy E. thermal energy

Answers

Answer:

Elastic potential energy

Explanation:

The potential energy of a spring is given by :

[tex]U=\dfrac{1}{2}kx^2[/tex]..........(1)

Where

k = spring constant

x = compression or elongation in the spring

When the spring is compresses, elastic potential energy of the spring increase. From equation (1), it is clear that the elastic potential energy of spring is directly proportional to the compression or elongation in the spring.

Hence, the correct option is (b) "elastic potential energy".

Answer:

Answer:

Elastic potential energy

Explanation:

The potential energy of a spring is given by :

..........(1)

Where

k = spring constant

x = compression or elongation in the spring

When the spring is compresses, elastic potential energy of the spring increase. From equation (1), it is clear that the elastic potential energy of spring is directly proportional to the compression or elongation in the spring.

Hence, the correct option is (b) "elastic potential energy".

Explanation:

How are organelles in a prokaryotic cell different from those in a eukaryotic cell

Answers

Eukaryotic cells contain membrane-bound organelles, including a nucleus.

Prokaryotic cells do not contain a nucleus or anyother membrane-bound organelle.
Final answer:

Prokaryotic cells house their DNA in a nucleoid and typically lack membrane-bound organelles. Eukaryotic cells have a true membrane-bound nucleus that houses DNA and contain various membrane-bound organelles allowing for compartmentalization of functions. Despite differences these cell types share common structures like a plasma membrane cytoplasm and ribosomes.

Explanation:

This question relates to the differences between organelles in prokaryotic cells and those in eukaryotic cells. Prokaryotic cells generally have their genetic material in the form of DNA, housed in an area called the nucleoid, rather than enclosed within a membrane-bound nucleus as seen in eukaryotic cells. These prokaryotic cells also typically lack the membrane-bound organelles that are abundant in eukaryotic cells.

Despite these differences, both prokaryotic and eukaryotic cells share common structures including a plasma membrane cytoplasm and ribosomes. Interestingly prokaryotic cells can often be differentiated by shape with most falling into one of three categories: cocci (spherical) bacilli (rod-shaped) and spirilli (spiral-shaped).

Eukaryotic cells contain a variety of membrane-bound organelles each with a specific function. The DNA within these cells is housed in a true nucleus enclosed by a double membrane. Owing to their larger size eukaryotic organisms require their internal structures to be separated resulting in a compartmentalization of functions within the cell.

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John is testing the effect of temperature on the solubility of sugar in water. He plans to determine the mass of sugar dissolved in a saturated solution. He will begin with a known mass of sugar and add sugar to water until the solution is saturated. He will then calculate how much sugar dissolved by subtracting the remaining mass from the initial mass.

Answers

Final answer:

John is conducting an experiment to determine the effect of temperature on the solubility of sugar in water. The experiment involves adding sugar to water until it is saturated and then calculating the mass of sugar dissolved. Solubility is the ability of a substance to dissolve in a solvent, and temperature can affect the solubility of a substance.

Explanation:

John is conducting an experiment to determine the effect of temperature on the solubility of sugar in water. He plans to add sugar to water until it is saturated, and then calculate the mass of sugar dissolved by subtracting the remaining mass from the initial mass. This experiment is related to the solubility of sugar in water.

Solubility is the ability of a substance to dissolve in a solvent to form a homogeneous mixture. In this case, sugar is the solute and water is the solvent. When sugar dissolves in water, its molecules become uniformly distributed among the water molecules.

The solubility of a substance, such as sugar, can be affected by various factors, including temperature. By testing the solubility of sugar at different temperatures, John can observe how temperature affects the amount of sugar that can be dissolved in water.

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Final answer:

John's experiment involves exploring the solubility of sugar, a solute, in water, a solvent. Creating a saturated solution, he investigates the temperature dependence of solubility. He calculates the mass of dissolved sugar to measure the effect of temperature on solubility.

Explanation:

John's experiment involves exploring the concept of solubility, specifically the temperature dependence of solubility. In solutions, there are usually two components - a solvent, which is the component present in a higher concentration and solutes, that are present in relatively lesser concentrations. In this case, water acts as the solvent and sugar behaves as the solute.

The process he describes involves creating a saturated solution by adding sugar to water until no more sugar dissolves. This condition is achieved when the solution's sugar concentration is greater than the equilibrium solubility at that temperature, making the solution supersaturated.

Moreover, the solubility product represents the product of the solute's concentrations in a saturated solution raised to the power of their stoichiometric coefficients. Therefore, by knowing the initial mass of sugar and the remaining undissolved sugar, John can calculate the mass of the dissolved sugar, which allows him to measure the effect of temperature on the solubility of sugar in water.

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Insertion into the RER membrane is cotranslational for TMPs, why is this necessary?

Answers

Answer:

Transmembrane  are inserted into the rough endoplasmic reticulum membrane  while they are still in their synthesis stage. They make there way to ER  with the help of the signal sequence already present in the synthesizing protein. The signal sequence stops the process of translation and directs the ribosome, carrying the unfinished protein to dock with ER.Translation than restarts when the signal sequence dock with the ER and it occurs in the ER membrane. This process is necessary because it allows the passage of transfer of protein to cross the lipid bilayer,  ER lumen facilitate protein folding and it rectifies the aberrant proteins and target them towards cytosol for destruction.


what am i missing I have
1. carbon dioxide
2. oxygen
and that's it please help

Answers

3.Glucose

4.Adenosine Triphosphate

Mary lives in a region that is close to the equator and is very sunny. She decides to harness solar energy for various purposes. Which of the following will help Mary?

Answers

Answer:

photovoltaic cells

Explanation:

Final answer:

Mary can use photovoltaic cells for electricity and passive solar heating for home heating thanks to her sunny regional location. Additional energy storage or grid connections provide energy when solar generation is down. Innovations in solar technology even allow for remote use.

Explanation:

Mary, living in a region close to the equator where it is very sunny, can harness solar energy for various purposes. To maximize efficiency, she can use photovoltaic cells (PV cells) for the direct conversion of solar energy to electricity, which is especially suitable considering they have become more efficient and affordable over time. Using technology that requires concentration of solar power, such as solar thermal systems with curved mirrors to heat up fluids and drive heat engines, can also be beneficial in sunny regions, although this approach is best suited for large, centralized facilities.

For heating, Mary might take advantage of passive solar heating through careful home architectural design, which includes south-facing windows that allow sunlight to heat the thermal mass inside the building, such as rocks or tiles, ultimately distributing warmth throughout the home. Moreover, adopting energy storage solutions or connecting to the grid will ensure electricity availability during the night or on cloudy days when solar generation is insufficient.

Lastly, Mary could explore the innovation of thin and mobile solar materials, which would enable energy collection in remote areas and underprivileged communities, illustrating the versatility and wide applicability of solar technologies in diverse settings.

How is evolution affected by environmental change?

Answers

well, the rate of when and how we or specimens around us change is greatly inpacted with enviorment. for one, pollution is at an all time high, and it effects how some species are reproduced or born.( with birth defects...) it can also determine what our featured will look like for the time to come...

hope this helps!!!
It effects how we have to live as time goes on. Example: we might have to live on Mars if we don’t take better care of our planet.

the golgi apparatus: a. packages cell products b. eliminates waste c. stores dna d. makes energy

Answers

It packages proteins

The golgi apparatus package cells.

Correct option is (A)  packages cells.

Golgi apparatus is the organelle found in most eukaryotic cells. Its main function is to modifying, sorting and packaging proteins for the purpose of secretion. It also helps in transportation of lipids across the cells.

Hence, option A is correct .

What does the cell membrane do for the cell?

Answers

A cell membrane is a thin layer that acts as a barrier that separates an individual cell or a cellular compartment from other surrounding structures. This dynamic layer plays an essential part in the transport of ions and nutrients.

Your welcome:).

The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space). It consists of a lipid bilayer with embedded proteins.

How does thermal energy transfer when a slice of pizza is warmed in the microwave

Answers

Microwaves hit the water molecules on the pizza and cause them to vibrate violently. This vibration causes heat and in turn warms the pizza.

Answer:

elctromagnetic waves transmit heat to the pizza

Explanation:

Using the periodic table entry below, how many neutrons does the most common isotope of hydrogen have? 1 2 0 cannot be determined

Answers

The answer is; 0

The most common hydrogen atom has one (1) proton and one (electron) but no neutron. This hydrogen isotope is referred to as hydrogen-1 or Protium. This hydrogen composes 99.985% of naturally occurring hydrogen atoms. The other atom, Deuterium, has a neutron in its nucleus. The other isotope is Tritium that has two (2) neutrons in its nucleus.


Answer:

The correct answer is 0

Explanation:

In the autumn, many birds will collect seeds and then hide them in various caches throughout their habitat. The birds will guard their catches from other birds, and move the caches if they start to dry out. These caches provide a food source for the birds during the winter. What is an abiotic factor that contributed to the evaluation of this set of behaviors? A. Limited food availability B. Being preyed upon by larger birds C. Competition with other birds for space D. Cold winter climate

Answers

cold winter climate

An abiotic factor that contributed to the evaluation of this set of behaviors is a cold winter climate. Thus, the correct option is D.

What is Habitat?

Habitat may be defined as a type of natural environment for which a particular species is best adapted due to natural selection. In other words, it may be defined as the area where the basic demands of an organism are fulfilled such as food, space, and mating partner.

It is the only reason that due to the cold winter climate, many birds will collect seeds and then hide them in various caches throughout their habitat in the autumn season itself.

This is because, in a cold winter climate, it is really tough for birds to find food and store it safely away from predators.

Therefore, an abiotic factor that contributed to the evaluation of this set of behaviors is a cold winter climate. Thus, the correct option is D.

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the structure found in all cells that acts like a barrier of the cell controlling what enters and leaves the cell

Answers

The cell membrane is in control of what enters and leaves the cell.

You have just discovered a new organism It is a single cell and has a cell wall but no nucleus what kind of organism is it Explain your answer

Answers

it is a prokaryotic cell

of the three lipid types, phospholipids are more similar to fats. TrueFalse

Answers

This is false. Triglycerides are lipids you obtain from fat, and are more commonly referred to when talking about fatty build up like cholesterol. Phospholipids are derivatives of triglycerides and are more for insulation of cells.

A woman treated her home with a pesticide that kills spiders. The first application killed 78% of the spiders. Two months later she applied the pesticide again but it only killed 45% of the spiders

Answers

She was killed posing pesticide that kills spiders
Final answer:

This is a mathematics problem involving sequential percentage decreases. Applying 78% and then 45% reduction doesn’t equate to a 123% reduction overall but rather two separate percentage calculations.

Explanation:

This question appears to be a mathematics question, dealing specifically with the concept of percentages. We start off with a certain number of spiders, and then 78% of them are killed by the first application of the pesticide. This leaves 22% of the original number of spiders. When the woman applies the pesticide two months later, it kills 45% of the surviving spiders, not 45% of the original number. This is a common scenario when dealing with percentages, especially in circumstances where percentages change over time or with each new calculation.

For example, if there were originally 100 spiders, after the first application there would be 22 spiders left (because 100 * 22% = 22). When the pesticide is applied again, 45% of these remaining spiders are killed, leaving only 55% alive. So now, we would have 12 spiders (because 22 * 55% ≈ 12).

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Which portion of the upper mantle forms the lithosphere

Answers

Together the crust and upper mantle are called the lithosphere and they extend about 80 km deep.The tectonic plates are made up of Earth's crust and the upper part of the mantle layer underneath

what 2 things are produced by neutralization

Answers

neutralisation is the process of converting an acid or a base into the pH value 7.The 2 things produced r hydrogen gas and a salt.

acid+base=salt+hydrogen gas.This often occured in your stomach. when you have gastroble you are eating tablets which are base and a reation take place with hydrocloric acid in it

hope it helps


Earth is made up of four main spheres. The geosphere refers to the rocks, minerals, and natural landforms that make up Earths surface. What do you think makes up the hydrosphere? Why is the hydrosphere important to life on earth?

Answers

For Plato Users


The word hydro refers to water. The hydrosphere consists of all rivers, lakes, oceans, glaciers, and groundwater found on Earth. The hydrosphere is important because water is a basic necessity for living things. Also, aquatic life forms rely on bodies of water for their habitat.

All water bodies make up the hydrosphere. Hydrosphere is important to life on earth because it provides aquatic habitat to various plants and animals and water plays an essential role in our daily life.

What is hydrosphere?A hydrosphere is a term used to describe the complete amount of water on a planet. A planet's hydrosphere is often liquid, vapour, or ice. Liquid water exists on the layer within the variety of oceans, lakes, and rivers. What is habitat?"Habitat is a term employed in ecology to explain the gathering of resources, physical and biological characteristics that exist in a very given location to assist a species' survival and reproduction." The five primary habitats include forests, grasslands, deserts, mountains and polar areas, and aquatic habitats. What are aquatic habitats?"An aquatic habitat is one that contains water." It includes both areas that are permanently submerged in water and areas that aren't from time to time.

Hence, hydrosphere is made up of water bodies and it provides aquatic habitats to various organisms.

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compared to farms of 100 years ago modern agribusinesses need

Answers

fewer workers.

Hope this helps!



Ana is six weeks pregnant, and her baby is officially in the embryo stage. What does the baby now have?

Answers

If I'm not mistaken, I believe the baby has a heart beat.

The baby has a heart beat.

Hope this helps!:)

What is the most important word to add to a Fixed Mindset statement in order to turn it into a Growth Mindset statement? ________

Answers

The correct answer is "yet".


The answer is "yet".


In a fixed mindset,  individuals trust their characteristics are settled qualities and accordingly can't change. These individuals archive their knowledge and abilities as opposed to attempting to create and enhance them. They likewise trust that ability alone prompts achievement, and exertion isn't required.  

On the other hand, in a growth mindset, individuals have a hidden conviction that their learning and knowledge can develop with time and experience. At the point when individuals trust they can get more brilliant, they understand that their exertion affects their prosperity, so they invest additional energy, prompting higher accomplishment.

what is meant by scouring

Answers

Scouring is the process where by rubbing very hardly, to clean a dirt, specially to make a clean or bright . To carry away the dirt as by current or water , often with off and on away.  Especially for the purpose of cleaning; to clean by friction.

example: To scour pots and pans and to scour grease from pots and pans.

Explanation: what does the potins give your or what do you earn??

which type of macromolecules regulates cell processes or transport material into and out of the cell

Answers

Final answer:

Proteins are the type of macromolecules that regulate cell processes and transport materials into and out of the cell, and they do so via various mechanisms such as channels, carriers, pumps, or through vesicle transport like endocytosis and exocytosis.

Explanation:Types of Macromolecules Regulating Cell Processes

Among the four major classes of biological macromolecules—carbohydrates, lipids, proteins, and nucleic acids—proteins are crucial regulators of cell processes and are responsible for the transport of materials into and out of the cell. Proteins may be involved in transport, functioning as channels, carriers, or pumps in the plasma membrane to facilitate the movement of substances across the cell membrane. They may also act as enzymes or signaling molecules, helping to regulate cellular pathways and responses. For the transport of larger macromolecules, cells utilize vesicle transport mechanisms like endocytosis and exocytosis. These processes involve the formation of vesicles to enclose the substances to be transported, requiring energy in the form of ATP to move these vesicles to and from the cell membrane.

Understanding the Role of Proteins

Proteins are synthesized by the cell's ribosomes and take on a diverse range of functions due to their varied structures, which are dictated by the sequence of amino acids they contain. This versatility in structure allows proteins to function as key components in various cellular activities, including those that regulate cellular functions or mediate the transport of substances into and out of cells. To sum up, proteins are the type of macromolecules that primarily regulate cell processes or transport material into and out of the cell.

Final answer:

Proteins are the macromolecules that regulate cell processes and facilitate the transport of materials into and out of the cell. They are involved in various cellular roles including transport and are essential for vesicle transport mechanisms such as endocytosis and exocytosis.

Explanation:

The macromolecules responsible for regulating cell processes and material transport into and out of the cell are known as proteins. These biological macromolecules are essential for life and are made from smaller organic molecules. In the context of cellular functions, proteins can have structural, regulatory, contractile, or protective roles. They can also serve in transport, be a part of storage mechanisms or cell membranes, act as toxins or function as enzymes. Each cell contains thousands of different proteins, each with a unique function tailored to the needs of the cell.

For the active transport of macromolecules across the plasma membrane, cells employ processes known as vesicle transport, which includes endocytosis and exocytosis. Both of these processes require energy to move substances into or out of the cell within vesicles. The transport and function of proteins as well as the utilization of energy for these processes are necessary for the cell's proper functioning and contribute significantly to the cell's structural components.

the simplest organisms are ___

Answers

Cell, (tissue,organ,organ system) if thats the type of science it is.

Mycoplasma genitalium has one of the smallest genomes of any free-living organism in the world, clocking in at a mere 525 genes. That's a fraction of the size of even another bacterium like E. coli, which has 4,288 genes.Jul 23, 2012

k on “Chromosomes and Inheritance”
1. Take the tour titled “What is a Chromosome?” Draw a picture that demonstrates how DNA is coiled into chromosomes:



Once you have your drawing, label the following: Chromatin, Histones, Chromatids, Chromosome, kinetochore

Answers

Chromatin is a complex of DNA and proteins found in eukaryotic cells, with the function to pack DNA in more compact shape and to prevent DNA damage. One of the main components of chromatin are proteins called histones. Histones are directly responsible for DNA package to form structures called nucleosomes. Chromatin can be found in its active form-euchromatin (tuned on genes) and inactive-heterochromatin (turned off genes).  

Chromosomes are organized structures of DNA which are visible in certain stages of cell cycle (such as metaphase when they are aligned). Every chromosome is copied once during the S phase of the cell cycle. It is then found in an X-shaped structure (centromere is located in the middle of the chromosome and two-arm structures are the original chromosome and the copy -sister chromatids).


cellular respiration is the process in which glucose is broken down into carbon dioxide and water, releasing cellular energy in the form of ATP to be used for life processes. In which of the following organelles is the energy created?
A. Golgi Vesicles
B. Mitochondria
C. Lysosmes

Answers

B. Mitochondria

The mitochondria is where ATP is made, hence why it is often called the "powerhouse" of the cell.

B. Mitochondria is the answer

As a result of climate change Earth's temperature is rising and sea ice is melting what is a likely effect

Answers

The animals who live in that area will become endangered because their habitat is being heated and they are made for cold only

As a result of global warming, the average surface temperature of Earth is increasing and the sea ice (in the polar regions) is melting, which in turn is effecting the oceans, animals, plants and ecosystems, agriculture, etc.

The Earth's temperature has increased by 1.4 degrees Fahrenheit over a century and is causing the ice to melt in the polar regions. This melting of ice is causing the sea levels to rise which means more heat is absorbed by the water, thus increasing the temperature of the oceans.

These changes in the temperature are making it difficult for many species to survive and some of the animals and plants have already started moving to higher altitudes as a result of this.

what kind of bond forms between oxygen and hydrogen in a single water molecule?

Answers

One oxygen atom is sharing electrons with two hydrogen atoms. Each hydrogen atom is sharing two electrons with the oxygen atom so that single covalent bonds form between the oxygen and hydrogen.

Answer:

Covalent bond (polar covalent bond) forms between oxygen and hydrogen in a single water molecule. Each oxygen molecule is bound to the hydrogen atom through the covalent bond.

Covalent bond: It is also known as a molecular bond, it is a chemical bond that shares the electron pairs between atoms. These electron pairs called bonding pairs and sharing pairs. The stable balance of attractive and repulsive forces present between atoms when they share their electrons is known as covalent bonding.

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Read the sentence below, which type of context clue is uses to help you figure out the meaning of the word jaunt? Instead of a long weekend trip, my family went on a quick jaunt to the local bowling alley.A. Inference context clueB. Antonym context clueC. Synonym context clueD. Definition context clue find a synonym for each bold word. 11. contingent (a) conditional (b) contented (c) massive (d) mountainous Calculate the mass of water produced when 3.03 g of butane reacts with excess oxygen. Select all the correct answers. For a claim about the natural world to be considered scientific, what attributes must it have? It must be open to modification if new evidence doesn't completely support it. It must be consistent with only a small portion of relevant observations or data. It must be applicable to future events and occurrences. It must be based on scientific observations that can be repeated in a controlled setting. 32% of adults say cashews are their favorite kind of nut. You randomly select 12 adults and ask each to name his or her favorite nut. Find the probability that the number who say cashews are their favorite nut is (a) exactly three, (b) at least four, and (c) at most two. If convenient, use technology to find the probabilities. Circle the correct answer 1348 rounding to the nearest thousand I believe i am a good candidate for your open position. What is wrong with this example? What role does your heart play in delivering oxygen to your body cells Jon ate too many holiday cookies and gained 2.2 kilograms in December. Then he went on a diet and lost 1.5 kilograms in January. Then lost another 3.7 kilograms in February. Jon wants to know the total change in his weight was over these three months. Which of the following equations matches the situation above solution for C and how to solve 5c-6=4-3c What percent of 29 is 3? Which sentence contains a preposition? 1.) Thomas Edison gazed at the bulb. 2) Thomas Edison invented many things. 3) Thomas Edison set up hid own laboratory. 4) Thomas Edison was a man who inspired others 4. Calculate the gravity force between the Earth (m = 6*10^24 Kg) and the Moon (m = 7*10^22 Kg) when their distance is 4*10^8 m. (use G = 7*10^-11 Nm2/Kg2)Fg = 1.8 * 10^52 Nthe answer is given, but can someone explain how to get it?? I've tried for an hour to figure it out, but I am not getting it what is a counterexample for the following conjecture if a counterexample does not exist choose not possible conjecture all quadrilaterals are rectangles What is the value of x? Enter your answer in the box. If you add together all of forces exerted on an object and get a non zero value this is called the _____ force on the object What did Louise Nevelson use to create unity in the sculpture Dawn's Wedding Chapel IV?A.symmetrical balance B.variety of flat shapes C.variety of colors D.single color for all the formsWhat kind of balance did Edward Weston use in the photograph Shell, 1927?A.radial B.symmetry C.asymmetryWhat did Edward Weston use to create contrast in the photograph Shell, 1927?A.difference in color B.difference in value C.similarities in texture D.similarities in shapePictures Are In Order Question Read the excerpt from Chapter 41 of Moby-(bad word brainly wont let me use). The White Whale swam before him as the monomaniac incarnation of all those malicious agencies which some deep men feel eating in them, till they are left living on with half a heart and half a lung. What theme of the novel does this excerpt best address? natures indifference to man mans indifference to nature the self-destructive nature of obsession the personal empowerment that comes from obsession (12 3 + 6) -4 Math help