Which statement about control Ed experiments is correct?

A. Controlled experiments test more than one variable at a time.

B. Controlled experiments do not contain and experimental group.

C. Controlled Experiments are rarely used anymore

D. Controlled Experiments test only one variable

Answers

Answer 1
A.Controlled Experiment test more than one variable at a time

Related Questions

which of the following is an early sign or symptom of Gonorrhoea?

A.) Brain damage

B.) hard red ulcers around genitals

C.) burning sensation when urinating

D.) blisters around genitals


PLEASE CHOOSE THE CORRECT ANSWER, TY.

Answers

C) burning sensation when urinating

1.4.2 Test (CST): Computer-Scored Unit Test
Question 4 of 25
A scientist did an experiment to see what type of water people preferred. She
hypothesized that most people would prefer bottled water. She did a blind
taste test with 500 people and put her results in the table below.
Number of people
who preferred
bottled water
Number of people
who preferred tap
Number of people who could
not taste the difference
between bottled and tap water
water

Answers

A. The data did not support the hypothesis because more people preferred tap water.

Arthropods are joint-legged animals. Spiders, crabs, pill bugs, centipedes, and millipedes are examples of the many types of arthropods. Which of these arthropods are most closely related?

Answers

Arthropods are joint-legged animals. Spiders, crabs, pill bugs, centipedes, and millipedes are examples of the many types of arthropods these are the centipedes, and millipedes.

What are the Arthropods ?

The arthropods which can be greater carefully associated are d. Arthropods of the equal species.

These arthropods are broadly disbursed in the course of the world, and they're characterised via way of means of a long, flat, multisegmented frame with one (centipede) or two (millipede) legs rising from every frame segment. Although maximum centipedes and millipedes are much less than 1.five in.

Read more about the Arthropods :

https://brainly.com/question/10006169

#SPJ2

What is the capacitance per square centimeter of such a cell wall?.

Answers

Cell membranes (the walled enclosure around a cell) are typically about d = 7.1 nm thick. They are partially permeable to allow charged material to pass in and out, as needed. Equal but opposite charge densities build up on the inside and outside faces of such a membrane, and these charges prevent additional charges from passing through the cell wall. We can model a cell membrane as a parallel-plate capacitor, with the membrane itself containing proteins embedded in an organic material to give the membrane a dielectric constant of about 12.

Which best describes this behavior?​

Answers

Answer:

It is beneficial to the whole species, but not to all of the individual members

Explanation:

Yeah it’s like not beneficial or whatever just kidding i don’t know good luck! Yea

If an egg that contains 24 chromosomes instead of 23 chromosomes is fertilized by a normal sperm, the result is

Answers

Answer:

However, in this question, the egg cell has 24 chromosomes instead of 23. This extra chromosome is often due to an error in meiosis, the type of cell division that makes gametes. So, after fertilization of an ovum with 24 chromosomes with a sperm cell with 23 chromosomes, a zygote with 47 chromosomes is the result

normal mitosis results in the formation of two nuclide that are genetically

Answers

Mitosis creates two nuclei that are genetically identical.

Scientists use specific levels of organization to analyze the biosphere. which level of organization describes a school of anchovies? a school of anchovies. at least 20 fish can be seen swimming. school of anchovies ecosystem community population biome

Answers

The level of organization that describes an anchovy school is community.

What is a community?

Communities can be defined as sets of populations, that is, a community is formed by organisms that live in a given area in a given period of time. Thus, the community differs from the population for being constituted by groups of organisms of more than one species.

With this information, we can conclude that the level of organization that describes an anchovy school is community.

Learn more about anchovy school  in brainly.com/question/1079705referrer=searchResults

#SPJ4

Answer:

b) community

Explanation:

A plant is growing near edge of a forest grows best when it gets a large amount of sunlight. If a forest fire occurs and burns down many trees in a forest, how will this affect the plant’s population?

Answers

Answer:

the plant's population will increase as now it has an abundance of sunlight because all the trees blocking it got cut down.

Explanation:

How do limiting factors most affect population size?
stop population growth
restrict population growth
O increase population growth
decrease population growth

Answers

The increase of population growth.

Failure to bend the knees and lower the body until the surface of the legs at the hip joint is lower than the top of the knees describes what

Answers

Failure to bend the knees and lower the body until the surface of the legs at the hip joint is lower than the top of the knees describes squat past parallel. Thus, the correct option is A.

What is parallel for a squat?

The exerciser lowers their hips till the tops of their thighs are parallel to the floor while keeping their lower back flat and their chest up in a proper parallel squat.

In fact, if your weight is distributed correctly and you maintain good posture during the movement, a full squat (below parallel) may actually produce more knee stability.

For more information regarding parallel for a squat, visit:

https://brainly.com/question/15094826

#SPJ1


Organisms with the greatest biochemical similarities
would most likely be found in which pair of genera?
1) 1 and 3
3) 3 and 4
4) 1 and 4
2) 2 and 3

Answers

Correct option is 4) 1 and 4

Similarities found in organisms on basis of their genes.One probable explanation for the relative similarity between genes from various organisms is that their ways of existence are comparable—for example, the genes from a horse and a zebra may be more same than the genes from a horse and a tiger because of their similar habitats and habits.

Molecular similarities of organismsMolecular biology provides substantial evidence for evolution, and it is rising rapidly. This molecular evidence allows researchers to go beyond paleontological evidence in some circumstances.

Learn more about genes, refer-

https://brainly.com/question/19947953

An investigator would like to initiate a study to determine if the epidemiology of HIV infection is different in prisoner populations from that in non-prisoner populations. Which category might this research fall under

Answers

The scientific research category under which this research might fall is Correlational (causative) research.

What is Correlational research?

Correlational research is a type of scientific research in which variables are correlated in some way.

In this case, the condition of the individual (prisoners/non-prisoners) might be correlated to the causal of the HIV condition.

In conclusion, the scientific research category under which this research might fall is Correlational (causative) research.

Learn more about Correlational research here:

https://brainly.com/question/8051473

#SPJ1

2 When a plant dies, the materials in the plant?
(1) are lost forever
(2) usually become fossils
(3) are recycled by decomposers
(4) react with carbon dioxide

Answers

Explanation:

it releases Carbon Dioxide into the atmoshphere

Hi, I just need some help to see if it is all correct answers soon please help me!!!!!!!

Answers

Well basing of what I'm seeing, these answers seem to be correct :)

PLEASE HELP! ITS A BIOLOGY QUESTION.​

Answers

Answer:

A) Red Light

B) Green Light

A) Blue Light

B) Cyan Light

Explanation:

I believe that you are overthinking this. White light is a combination of all the colors on the visible spectrum. This means that if you shine a white light through a red filter, it will only show the red light that is in the white light. There will be only red because the other colors of the spectrum are not visible due to the filter.

This rule applies to all of the filters.

Question 6 of 25
Which is a kingdom?
O A. Eukarya
OB. Mammalia
OC. Animalia
OD. Prokarya

Answers

Answer:

mammalia

is a kingdom

hope it helps you

B: Mammalia is the answer to the question since mammals are indeed a kingdom of its own

Is a law a theory or is a theory a proposed law

Answers

Answer:

Theory is a proposed law.

Explanation:

A proposed law is a law that has not yet been approved; a speculation made by an individual that has not yet been proven as a real thing. For example, I say that ice cream is now free for all, and that would be a completely proposed law since no one has approved that but me.

Answer:

Neither

Explanation:

A law is something in science that can be proved through experimenting. A law does not attempt to explain why something is the way it is, it only states it.A theory is an idea that has a large amount of scientific data backing it and is the accepted answer by most scientists, but there is no way to experiment on a scientific theory. A theory will never be able to become a law. A theory explains what it is describing.

An example of a law is the law of conservation of energy, which has to do with how energy is used. Scientific experiments can be done to observe energy.

An example of a scientific theory is the theory of natural selection. Based off of data and observation, the theory of natural selection has been formulated, and the theory of natural selection explains why.

Why does cellular respiration only happen by night in plants

Answers

Answer:  The Photosynthesis process ceases.

Explanation: To explain it is simple like the plant respiration occurs 24 hours per day, but night respiration is more evident since the photosynthesis process ceases.

krebs cycle/citric acid cycle- cellular respiration that does not require the presence of light

A racoon may live longer when it only eats vegetables.
What is the student doing?
A. Forming a hypothesis
B. Collecting data
C. Drawing a conclusion
D. Making a prediction

Answers

Answer:

D making a prediction

Explanation:

How does a nerve
impulse begin in a
neuron?
A. A positive charge is created in the cell that travels
down it.
B. The cell filling with sugars gives it an energy surge.
C. Water moves down the cell by osmosis.
D. The cell contracts like a muscle and connects to the
other neurons. i

Answers

A positive charge is created in the cell that travels down it does a nerve

impulse begin in a neuron. Thus, the correct option is A.

How the neuron get stimulus?

When a neuron receives a chemical stimulation, a nerve impulse is formed. The electrical action potential of the nerve impulse passes along the axon membrane to the axon terminal. Neurotransmitters are released at the axon terminal, which transfer the nerve impulse to the next cell.

The resting potential of a neuron is the electrical differential across its membrane. The sodium-potassium pump, a transport protein, creates the resting potential. This protein generates a positive charge by moving a high number of sodium ions (Na+) outside the cell.

For more information regarding neuron, visit:

https://brainly.com/question/11538106

#SPJ1

Answer: A. A positive charge is created in the cell that travels

down it.

Explanation:

The model shows an intended destination, a, of wind from the north pole. the actual destination is b. what is the reason for this difference? a. coriolis effect b. changes in salinity c. evaporation d. water cycle

Answers

The model shows the  intended destination, a, of wind from the north pole and the actual destination is because of the coriolis effect.

What is the coriolis effect?

The term coriolis effect has to do with the patterns in which the motion of an object that is not connected to the ground is deflected. It is connected to the description of weather patterns.

Hence, the model shows the  intended destination, a, of wind from the north pole and the actual destination is b because of the coriolis effect.

Learn more about coriolis effect:https://brainly.com/question/2478442

#SPJ4

Answer:The answer is A

Explanation:

I Got it right on the test

Carbon can be found in shells and
rock at the bottom of
sedimentary
oceans in the form of...
A. carbonic acid.
B. calcium carbonate.
C. carbon dioxide.
ہے

Answers

Answer:

B IS THE ANSWER

Explanation:

I THINK SO

What is the role of CO₂ in global temperature regulation?

Answers

Answer:

carbon dioxide controls temperature because the carbon dioxide molecules in the air absorb infrared radiation. The carbon dioxide and other gases in the atmosphere are virtually transparent to the visible radiation that delivers the sun's energy to the earth

Explanation:

Describe what happens when blood glucose levels are not kept stable.

Answers

Blood glucose levels should be kept stable in the body because :-

A rise in glucose level can cause diabetes mellitus or simply diabetes due to too much glucose in the blood stream.In this patients pass urine too much loaded with sugar. Also he feels thirsty due to too much loss of water and becomes weaker and weaker.

A fall in glucose level can cause hypoglycemia.

Even a little fall of glucose level in the bloodstream can bring a patient in a state of coma. The person gets frequent headaches, vomiting, dizziness, etc.

The regualtion of glucose in the body is done by two main hormones secreted by an endocrine gland called pancreas.

These two hormones are - Insulin and Glucagon.

Insulin lowers the glucose level in the body whereas, Glucagon helps in increasing it.

Therefore, the glucose level should be always kept stable in the body.

Explanation:

Hope it helps you!!

Organisation of plant tissues and growth questions

Answers

Plant tissues are comprises of cells which are similar and perform a specific function. Plant tissue are of two types meristematic tissue and permanent tissue.

What is meristematic tissue and permanent tissue?

Meristematic tissue comprises undifferentiated cells, that are the building blocks of the specialized plant structures. Meristematic tissues comprises living cells with varied shapes.

Permanent tissue is made of meristematic cells, which has definite form and shape and have lost the power to divide and differentiate and are of three types - simple, complex and special. The simple tissues are of of three types namely parenchyma, sclerenchyma and collenchyma.

Plant tissue allow the maximum elongation of plants to absorb sunlight for the photosynthesis process. Primary phloem can transport the products of photosynthesis from the leaves to other parts of the plants.

For more information regarding plant tissue, visit:

https://brainly.com/question/3120884

#SPJ4

What is carrying capacity?

The highest number of different species an environment can
support.
The highest organism size an environment can support.

The highest population an environment can support.
The highest growth an environment can support

Answers

Answer:

The highest population an environment can support.

The graph shows the supply and consumption of forests when the consumption rate and population growth rate are both low.
what does the graph predict for the future? A Less air pollution.
B Forest overgrowth.
C Reduced demand.
D Resource depletion.

Answers

The graph predict resource depletion because the supply and consumption of forests when the consumption rate and population growth rate are both low.

What are the consequences of the depletion of natural resources?

The consequences of this ecological excess are increasingly evident, with imbalances such as the extinction of species, scarcity of fresh water, soil erosion, loss of biodiversity and global warming.

Reaching this limit means that all the resources used for the survival of humanity are depletion and we are in “debt” to the planet, in this case it is the graphic representation of this depletion.

See more about depletion at brainly.com/question/11318086

#SPJ1

How are meiosis and mitosis different?

Answers

Answer:

Mitosis results in two identical daughter cells, whereas meiosis results in four sez cells so yeah

Why is special about dialysis tubing being that it is good to be used in this experiment about osmosis?

Answers

Answer: That the  dialysis tubing is a semipermeable membrane. Water molecules can pass through the membrane. The salt ions can not pass through the membrane.

Explanation: :)

Other Questions
When consumers start searching for ways to satisfy needs, their internal search is characterized by A. consulting close friends and families before expanding the search to a wider, external group. B. the influence of advertising. C. looking through the internal records of a firm, often found on the company website. D. examining personal memories and knowledge. E. using the Internet to find what other consumers feel about a specific product or service. What does the word pertinent mean based on the context clues provided? 11. Find the total surface area.4 in.6 in.2 in. The quadratic function graphed has a range of y 23.O TrueFalse Which expression correctly represents "ten times the difference of a number and six"? What questions about human culture does this work prompt? During the Cold War, two superpowers (US and USSR) vied for nuclear supremacy. Has the collapse of the Soviet Union increased or decreased the threat of nuclear war? Explain. What is the probability that the spinner lands on an even number or on the unshaded section? one-fifth two-fifths three-fifths four-fifths You deposit $1600 in a bank account. Find the balance after 3 years for each of thefollowing situations:The account pays 2.5% annual interest compounded monthly.The account pays 1.75% annual interest compounded quarterly.The account pays 4% annual interest compounded yearly. I am sometimes called your "windpipe." When you breathe.air travels through me to your lungs. What am I? QuestionWhich of the following factors can affect the strength of electric or magnetic fields? (YOU MAY SELECT MORE THAN ONE ANSWER Please answer now!!! An object is moving across a surface, but it does not gain or lose speed. Which best describes the objects force?The net force is positive.The net force is zero.The positive force is greater than the negative force.The negative force is greater than the positive force. 6. If b>6, then 3b + 3 could beA. 18B. 19C. 20D. 21E. 22 b divided by 7-12=8What is b? Explain any two factors that affect the pressure at a point inside a liquid A 5.0 kg box is sitting on a scale in an elevator. Before the elevator moves, the scale reads 49.05 N. When the elevator accelerates into motion, the scale momentarily reads 46.75 N. If the acceleration due to gravity is 9.81 m/s2, what is the magnitude of the acceleration of the elevator? (1 point)A) 0.46 m/s2B) 0.57 m/s2C) 0.87 m/s2D) 0.91 m/s2 When the plan to advertise in developing countries on the sides of buses fell through because of legal barriers, Mya brought her team together and charged them with coming up with a substitute advertising channel. She gave them the full authority to solve the problem and implement the solution. Mya is a manager who practices _______ with her employees. Pls help meee!!!!!!!!! que significa gulunguiar