identify the control group

Answers

Answer 1
A control group in a scientific experiment is a group separated from the rest of the experiment, where the independent variable being tested cannot influence the results. This isolates the independent variable's effects on the experiment and can help rule out alternative explanations of the experimental results

Related Questions

You are comparing a reaction that produces a chemical change and one that produces a physical change. What evidence could you use to determine which type of change is occurring?

Answers

Answer:

There are no specified options in this question but the answer will be provided elaborately in order to fully comprehend it.

Please find the detailed answer in the explanation section.

Explanation:

Matter undergoes two types of changes viz: physical and chemical changes. A physical change, as the name suggests, involves a change in the physical nature of matter. A physical change does not change the chemical property of the substance involved. Since there is no chemical modification to the substance, no new substance is formed from a physical change. Hence, the substance only undergoes a change of state. For example, water (liquid) changing to ice (solid) is a physical change. Physical changes are usually reversibleb i.e. can be changed back to their previous form.

Chemical change is another type of change in which substances undergo a change in their chemical properties to form new substances. Changes like formation of gas bubbles, change in temperature, color change etc will be noticed during chemical changes. Examples of chemical changes are rusting, burning because they irreversibly change the chemical composition of the substances involved etc.

In a nutshell, in order to determine the type of change occuring in a reaction, one should look out for whether or not there is a change in nature of the substance leading to the formation or not of a new substance.

Answer:

Answer is in the Explanation Section

Explanation:

Either way, matter, physical and chemical changes are pretty much the same... Put it this way if you have a match and you light it what happens? If you said it burns your right! If not it is okay we all are not right. Because it is with the chemicals it's made with and adding oxygen makes it burn and breathe so it can burn freely.

DUNNO IF YOU CAN ADD COMMENTS ON MY ANSWER.

An organism is unicellular autotrophic and ancient what domain does this organism does not belong

Answers

Answer:

Eukaryote

Explanation:

“Ancient” refers to archae. Archae and bacteria are the prokaryotic two domain out of three. In fact eukaryote have protists and plants which are able to perform autotrophic behavior. But unicellular wouldn’t define eukaryotes.

Which of the following is true about ischemic stroke? a. Often caused by emboli from the basilar arteries b. Has risk factors that include atherosclerosis c. Can be a result of a hypercoagulable state d. Results from hemorrhage into brain tissue Is associated with acute hypertension

Answers

Answer: Option B.

Has risk factors that include atherosclerosis

Explanation:

Ishchemic stroke has a risk factor that include Atherosclerosis because it is when blood clot causes a blockage to artery that supplies blood to the brain.

This is major caused by buildup of plagues or deposition of cholesterol ( atherosclerosis). The blockage reduces the blood flow and oxygen to the brain, which cause damage or death of brain cells

If the arteries become too narrow, blood cells may collect and form blood clots.

There are usually more prey compared to the
predators that feed on them.
Which of the following statements explains this?

All of the energy stored in the prey is transferred up the
food chain

Predators need energy for cellular respiration but their
prey do not

Only some of the energy stored in the prey can be used
by the predators to stay alive​

Answers

Answer:

Hi! The answer is Only some of the energy stored in the prey can be used by the predators to stay alive.

Explanation:

Predators are fewer in number than prey because they are higher up the food chain. In a food chain, an organism passes on only part of the energy it receives from food. With less energy, each level in a food chain supports fewer individuals than the one below it.

Hope this helped!

what is the difference between fruit and seed​

Answers

Answer:

The key difference between fruit and seed is that fruit is the developed ovary of angiosperms after fertilization while seed is a fertilized ovule of plants. After the fertilization, the ovule becomes the seed, and the ovary becomes the fruit...

HOPE THIS HELPS :)

Answer:

Fruit(1).It is the developed overy of angiosperms after fertilization.

(2).It consists of a seed or seeds.

Seed:It is a fertilized ovule of plants.

(2).It consists of an embryo.

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TIME REMAININ
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About how long ago did our solar system start to form?
O About 5 million years ago
O About 14 million years ago
About 5 billion years ago
O About 14 billion years ago

Answers

Answer:

About 5billion years ago is the correct option.

Explanation:

Hope this will help you :)

Answer:

About 5 billion years ago

Explanation:

label the four types of weather fronts. ​

Answers

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The type of front depends on both the direction in which the air mass is moving and the characteristics of the air mass. There are four types of fronts that will be described below: cold front, warm front, stationary front, and occluded front.

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The glenohumeral joint that articulates the humerus to the pectoral girdle is a highly mobile joint. This mobility comes at a cost because ________.

Answers

Answer:

the joint is relatively unstable and can easily dislocate

Explanation:

The glenohumeral joint is a ball and socket type of joint and it is found between the scapula and the humerus. The ball and socket joint helps in its ability to perform rotational movement.

The glenohumeral joint that articulates the humerus to the pectoral girdle is a highly mobile joint. This mobility comes at a cost because the joint is relatively unstable and can easily dislocate.

Predicting when an earthquake will occur is known as _______. _______ energy is what gathers in a fault through strains. When owners of established buildings take the initiative to reinforce existing structures so that they can withstand severe earthquakes, they're participating in _______. A tsunami in Japan caused a meltdown of reactors at _______. Respond to the following based on your reading. Briefly discuss how strain in a fault can be determined and used to produce an earthquake forecast.

Answers

1. forecasting

2. Potential

3. seismic retrofitting

4. FD power plant

5. The best way to determine how strain accumulates in a fault is with GPS measurements of plate motion. As ground on each side of a fault moves, the potential energy that accumulates in the fault can be estimated and used to forecast the rough timing, magnitude, and location of an earthquake.

Filling up the gaps  in your question

Predicting when an earthquake will occur is known as Forecasting Potential energy gathers in a fault through strains They are participating in seismic retrofittingA Tsunami in Japan caused a meltdown of reactors at FD power plant

Strain in a fault can be detected with the use of GPS measurements

Strain in a fault can detected with the use of the readings from GPS indicating the movements of the plates on each side of a fault. As These movements occur, potential energy is accumulated in the fault and this can be used to predict the time and magnitude of an intending earthquake.

Hence we can conclude that the gaps in your questions are correctly filled  as :

Forecasting Potential energy seismic retrofitting and FD power plant.

Learn more about earthquakes : https://brainly.com/question/248561

Hii answer to question 12 please?

Answers

Answer:

D

Explanation:

This is an experiment to prove that photosynthesis or exposure of light produces starch.

Only the D part will contain starch because D part shows green color which is the sign of starch formation due to photosynthesis while the covered region and white region will not form starch because they do not undergo photosynthesis process.

Hence, the correct option is "D".

Answer:

D

Explanation:

^^^

What happens when trees are buried before they decay

Answers

They become petrified, if they are buried deep in the ground they will definitely become petrified

Hope this helps you ☁︎☀︎☁︎

The pathogenesis of adult respiratory distress syndrome (ARDS) involves which of the following? (Select all that apply.) Injury to the alveolar-capillary membrane Increased alveolar-capillary permeability Decreased lung compliance Alveolar wall thickening Collapse of the lung

Answers

Answer:

Injury to the alveolar-capillary membrane  

Increased alveolar-capillary permeability  

Decreased lung compliance

Explanation:

Acute respiratory distress syndrome (ARDS) is a serious health problem that affects the lungs, which is caused by significative amounts of fluid that fill the air sacs. ARDS may be caused by distinct conditions such as, for example, pneumonia, sepsis, and traumatic injury. ARDS is a type of respiratory failure that results in decreased oxygen levels and increased carbon dioxide (CO2) concentration into the bloodstream.

Pollution that runs off the land often combines with sediments at the bottoms of bodies of water. In this way, fish may become poisoned. This is an example of how fish interact with the _____.

Answers

Answer:

Pollution that runs off the land often combines with the sediments at the bottom of the ocean or other types of water. In this way, fish may become poisoned. This is an example of how fish interact with the following are types of rocks that make up the lithosphere exceptThe amount of carbon dioxide in the atmosphere would greatly increase the population .

Smaller sub-unit molecules that bond together to form a polymer
called?
atom
monomer
lipids
water

Answers

Answer:

monomer is the answer

Which tissue transmits signal to then brain?

Answers

Answer:

The Spinal Cord Transmits Signals to and from the Brain and Commands Reflexes The spinal cord is an elongated cylinder of neuron cell bodies, bundles of axons and other cells, protected by connective tissue and bone.

Explanation:

It connects to the brain at the medulla oblongata and runs down the vertebral column, the hollow tunnel enclosed within the vertebrae of the spine. The spinal cord is part of the central nervous system and serves as a kind of superhighway. Sensory information and motor commands travel up and down, heading to and from the brain. These signals speed in and out of the spinal cord via spinal nerves—the “on-ramps and off-ramps” that branch out to supply the limbs, torso, and pelvis. Some incoming signals demand a simple, immediate response. The spinal cord can shoot out a reflex command without bothering the brain.

Spinal cord transmits signals to the brain

The extensive connective tissue network, which encircles the bases of the pulmonary trunk and aorta and the valves of the heart, is called the ________ of the heart.

Answers

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The extensive connective tissue network, which encircles the bases of the pulmonary trunk and aorta and the valves of the heart, is called the Cardiac skeleton of the heart.

Explanation:-The cardiac skeleton consists of four bands of dense connective tissue, called fibrous rings, that surround the base of the pulmonary trunk, aorta, and mitral and tricuspid valves.May

Interesting facts about Human[♥️]!!The average heart is the size of an adult fist.Your heart will beat about 115,000 times each day.The beating sound your heart makes is caused by the opening and closing of its valves.The human heart weighs less than one pound, but a man’s heart is typically two ounces heavier than a woman’s.A woman’s heart beats slightly faster than a man’s.There is such a thing as a broken heart. Symptoms are similar to a heart attack but the cause is usually stress and not heart disease.Laughing is good for your heart. It reduces stress and gives a boost to your immune system.

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Help me guys please. What is a mutation? What causes mutation?​

Answers

Answer:

A mutation is a change in a DNA sequence. Mutations are commonly caused by mistakes during DNA replication. However, they can also be caused by ultraviolet radiation, exposure to chemicals called mutagens, and infection by viruses. But, a mutation usually occurs when a nucleotide in the DNA gets changed, causing the nucleotide sequence to be copied incorrectly which leads to the wrong code for a protein. This can sometimes be fatal.

Hope that helps.

Is the bacteria in pond water living?

Answers

Answer:

Bacteria in pond water IS living

Explanation:

Any bacteria is living, it is a single cell organism.


These not only make up the larger percentage of living organisms in such aquatic systems, but also tend to display the greatest range of metabolic group as compared to others. Nostac and anabaena are some of the most common bacteria that can be found in pond water.

Which organisms transform nitrogen to a form that is useful to plant?

Answers

Answer:

bacteria

Explanation:

Bacteria helps in a process called ammonification where ammonia is oxidized to nitrites and then to nitrates and these nitrates are the most usable form for plants.  

Violet Beauregarde is a character in Charlie and the Chocolate Factory who swelled after eating blueberry gum. What is causing Lisa’s body to swell?

Answers

I inferred you are referring to Violet instead.

Answer:

she chews "Gobstoppers" which are not meant for chewing.

Explanation:

Remember, it all started when Violet entered the inventing room and she began to show an interest in gobstoppers, believing them to be similar to gum, even though they were not meant for chewing.

After ignoring the warning from Wonka, she begins chewing the gum which leads her body to swell.

A scientific law _______________. a. states the presence of a phenomena b. does not explain why a phenomenon occurs c. is completely accepted by the community

Answers

Answer:

a. states the presence of a phenomena

Explanation:

A scientific law states the presence of a phenomenon on the basis of repeated experiments or observations.

A scientific law sometimes not completely accepted by the community because of some ethical issues.

Hence, the correct answer is "a. states the presence of a phenomenon".

what are the major types of nutrients you can get from food ​

Answers

Answer: lipids, proteins, carbohydrates, and water

Explanation:

These are the four major nutrients that you can get from food. Hope this helps!

In the plot of "Cruel Tribute," which events are a result of King Minos's actions? Select 3 options. Athens agrees to pay the tribute. Young people participate in a lottery. Theseus uses the silken thread. Theseus fights the Minotaur. Aegeus drowns in the Aegean Sea. Theseus becomes king.

Answers

The correct answers are A) Athens agree to pay the tribute, B) Young people participate in the lottery, and D) Theseus fights the Minotaur.

In the plot of “Cruel Tribute,” the events that are results of King Mino’s actions are: Athens agrees to pay the tribute, Young people participate in the lottery, and Theseus fights the Minotaur.

The “Cruel Tribute” refers to the Greek mythology and the story of Theseus, who confronts the Minotaur and kill it.

James Baldwin is the author of “The Cruel Tribute”. James Baldwin (1924-1987) was an American novelist. He also wrote many novels on African American issues and Civil Rights such as “Nobody Knows my Name”, “Another Country”, and “The Fire Next Time”.

Answer:

a,b,d

Explanation:

Which is the property of matter in which a substance can transfer heat or electricity?

Answers

Answer:

Conductivity

Explanation:

Answer:

Conductance

Explanation:

what is maeant by sexual reproduction

Answers

Answer:

Sexual reproduction is a mode of reproduction involving the fusion of haploid female gamete (egg cell) and haploid male gamete (sperm cell). The fusion of these gametes occurs at fertilization resulting in the formation of a diploid zygote. ... Two major types of sexual reproduction are syngamy and conjugation.

Explanation:

Answer:

The production of a new living beings by intercourse of two different genes is called sexual reproduction.

Explanation:

In most higher organisms, one sex (male) produces a small motile gamete which travels to fuse with a larger stationary gamete produced by the other (female).Sexual reproduction is a type of reproduction that involves a complex life cycle in which a gamete with a single set of chromosomes combines with another to produce an organism composed of cells with two sets of chromosomes.

Hope it helps you:)!!!!!!!!!!!

true or false a theory is a scientific idea that has been proven true

Answers

Answer:

true

Explanation:

i hove this will help u

A scientist asked a question that was based on an observation. What should the scientist do next? The scientist should form a hypothesis and design an experiment. The scientist should collect data and organize it into tables. The scientist should draw conclusions based on the observation. The scientist should record and communicate his hypothesis and results.

Answers

Answer:

A. The scientist should form a hypothesis and design an experiment..

Explanation:

Edge 2021

To test hypotheses, which are proposed explanations for scientific observations, The quantifiable variables specified in a particular hypothesis serve as the basis for designing experiments. But this is just the beginning. Thus, option A is correct.

What is scientific hypothesis and design?

Researchers create hypotheses to direct experimental design when performing scientific studies. A tested and falsifiable explanation is referred to as a hypothesis.

It is an improbable, untested solution to your research question. In some cases, writing many hypotheses that speak to various facets of your research issue will be required.

It is a causal design in which the effect of the independent variable on the dependent variable is observed.

For instance, one tracks how an independent variable like pricing affects a dependent variable like client satisfaction or brand loyalty.

Therefore, The scientist should form a hypothesis and design an experiment.

Learn more about scientific hypothesis and design

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Archaea prokaryotes are prokaryotic in nature. One of the differentiating characteristics between them is that eubacteria have what in they're cell walls

Answers

Answer:

Eubacteria have cell walls made up of

chains of peptidoglycan.

Explanation:

Eubacteria have cell walls that cell wall composed of cross-linked chains of peptidoglycan. The peptidoglylcan is a polymer that combines both amino acid and sugar chains. Eubacteria have peptidoglylcan in their cell walls because it's play structural role in them , giving strength and rigidity, counteracting the osmotic pressure of the cytoplasm and also help during binary fission in reproduction.

What is a scientific word that starts with homo? Sorry if its the wrong subject, I couldn't find science.

Answers

Answer:

homogeneous

Explanation:

Answer:

homogamy

homogeneously

homospory

homologically

homonym

homoeroticism

homograph

what is reproduction?​

Answers

Answer:

Reproduction is the biological process by which new individual organisms – "offspring" – are produced from their "parents".

Explanation:

Other Questions
2.Which of the following statements best states what the estate, L'Abri, symbolizes?A. It represents the antebellum South, valuing tradition and maintenance of thepast.B. It represents the power and wealth of the upper class.C. It symbolizes a class hierarchy, particularly the white upper class, establishedthrough difference in race and wealth.D. It symbolizes the heights of Southern society and foreshadows a fall from theupper class.i Solve this plz. Its 4x4 sudoku What are Tocquevilles five values referred to as? SIMPLIFY the expression- 4(2x - 3) nitrogen-fixing prokaryotesnitrifying prokaryotesnitrogen to ammoniaconvert ammoniato nitrites and nitratesconvert nitrates toatmospheric nitrogendenitrifying prokaryotesAn ecosystem experiences a loss of denitrifying prokaryotes. Will this loss affect the health of the ecosystem?OA. No, because denitrifying prokaryotes do not produce the usable form of nitrogen needed by organisms.OB. Yes, because an excessive level of usable nitrogen could accumulate and disrupt the ecosystem's balance.OC. No, because atmospheric nitrogen is not necessary to most organisms in an ecosystem.D. Yes, because plants and animals will no longer have the usable form of nitrogen that they need to grow.egion Scor The lac operon consists of a coding region, which contains three genes that code for proteins needed to metabolize lactose, and a regulatory region, which regulates transcription of the coding region.a. Trueb. False If the angle of reflection of a propagated ray is 35. Calculate the a. Angle of incidence b. Angle of deviation c. Angle of glance $33 for 6 sandwiches find the unit rate What is the value of x + y Sole the triangle by finding the length of DF and the measures of all the angles Presented below is income statement information of the Schefter Corporation for the year ended December 31, 2013. Sales revenue $ 492,000 Salaries expense 80,000 Interest revenue 6,000 Advertising expense 10,000 Gain on sale of investments 8,000 Cost of goods sold 284,000 Insurance expense 12,000 Interest expense 4,000 Income tax expense 30,000 Depreciation expense 20,000 Required:Prepare the necessary closing entries at December 31, 2013Record the closure of revenue accounts.Record the closure of expense accounts.Record the transfer of the net profit. How do you do this problem? See attached image 20. "Are you _?" she asked. The diameter of a circle has the endpoints of (2, 5) and (-8, 29). Find the center and radius of the circle. ANSWERS ATTACHED, due in 2 hours, will give BRAINLIEST! 15 points! Will give brainliest! Probability Which sentence best states the central idea of the first paragraph? A Life in New York was teetering between old and new. B People once traveled mostly by horse, carriage, and ship. C New engineering feats were being accomplished in the 1800s. D People crossed the East River by ferry-boat, night and day. What information can we learn from about prehistoric (time before writing) society that can help us today? Simplify this expression Which has a greater capacity: a bottle containing 32 ounces of iced tea, a bottle containing 1 Liter of iced tea, or a bottle containing 2 pints of iced tea?2 pintsThey are all the same capacity.32 ounces1 Liter For the equation r/4 = 16, select the appropriate property of equality to move the coefficient to the right side of the equation. A. Subtraction Property of Equality B. Addition Property of Equality C. Division Property of Equality D. Multiplication Property of Equality