How one variable affects another happens in:
A. surveys.
B. case studies.
C. observations.
D. experiments.

Answers

Answer 1

The one variable affects another happens in  experiments. Thus, option D is correct.

What is experiment?

An experiment, or experimental research, is a research method in which the researcher manipulates or changes the value of one variable, (the independent variable) and measures the variable that is considered the dependent variable, in order to find how the change affects it.

The other three posible answers, observational research, survey and case study are also research methods, but the researcher can't manipulate or control any of the variables, these methods are used only to measure a specific variable.

Therefore, The one variable affects another happens in  experiments. Thus, option D is correct.

Learn more about  experiments on:

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Related Questions

8. In chickens, brown feathers are dominant over red feathers. Suppose we cross two heterozygous chickens.
Draw the punnett square and list the genotypes and phenotypes of the offspring.
I
Genotypes of offspring:
Phenotypes of offspring:
Plz help me

Answers

Answer:

Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.

Explanation:

Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.

The cross can be represented by a Punnett Square:

Bb X Bb cross

alleles     B    b

B             BB Bb  

b             Bb bb

Where the result is:

Genotypes:  

Bb, 50% BB, 25% bb, 25%

Phenotypes:

Brown feathers, 75% Red feathers, 25%.

In this case, the probability of having brown or red feathers is 3:1.

A certain species of trilobite is known to have lived 300 million years ago. If this index fossil was found in a rock layer containing other fossils, what could you infer about the other fossils
a The rock layer killed the trilobite and the other fossils
b The other fossils are about 300 million years old
c The organisms that formed the other fossils are still living.
d The rock layer formed before the trilobite and other organisms

Answers

Answer:

b The other fossils are about 300 million years old

Explanation:

From the description of the problem given, we can correctly conclude that the other fossils are about 300 million years old and even the rock layers formed around that period in time too.

Fossils are the preserved remains of organisms that has once lived. Through the principle of relative dating we can determine the age of fossils and those of other related ones. According to the principle of fossil and fauna succession, "fossils succeed one another in a predetermined form". So, the fossils occurring together within the rock layers are of the same age.

The Earth’s atmosphere consists of a combination of gases. Scientists believe that we are creating air pollution, which causes an increase in some gases, such as carbon dioxide. Such increases make it difficult for the atmosphere to stay in balance, and heat radiating from the Earth is being trapped. What term refers to the sun’s energy being trapped in our atmosphere?

A) cumulus clouds


B) greenhouse effect


C) transpiration


D) convection

And I need an explanation

Answers

Answer:im guessing its the greenhouse effect

Explanation:The Earth's atmosphere is composed of Nitrogen (78%), Oxygen (21%), and other gases (1%). ... Due to increases in gases, like carbon dioxide, that trap heat being radiated from the Earth, scientists believe that the atmosphere is having trouble staying in balance creating the greenhouse effect

what is the function of RNA

Answers

Answer:

The central dogma of molecular biology suggests that the primary role of RNA is to convert the information stored in DNA into proteins.

-- please mark the brainliest and click the thanks button if correct :)

Answer:

Ribonucleic acid is a polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes.

Explanation:

Calculate the momentum of a 0.145 kg rock thrown at a speed of 40.0 m/s.

a
5.8 kg*m/s
b
.0036 kg*m/s
c
275 kg*m/s

Answers

Answer:

5.8 kg*m / s

Explanation:

p=m*v

.145*40 =5.8

what are 2 stages of photosynthesis, and where does it take place?

Answers

photosynthesis takes place in the roots of the plant

The word physiology comes from __________ attempt to distinguish between natural and supernatural causes of things.

Answers

Answer:

Harvey

Explanation:

The study of specific characteristic and mechanism of animals or plants that makes it to exits living organisms is called physiology. Thus this could be plant, animals insects physiology.

In 1628 Harvey for published a book, titled An anatomical exercise on the motion of the heart and blood in living beings.  That was  the first time the word physiology was used.

He used the tam to  distinguish between natural and supernatural causes of things in the book.

The publication of this book formed the golden age of physiology in Nederland as early s 1628

The following is the results of a genotype being "foiled" for a dihybrid cross: BS | Bs | bS | bs
Determine the parents genotype
A) BBSS
B) BBss
C) BbSs
D) BbSS

Answers

Answer:

C. BbSs

Explanation:

The foiled results of the genotype include both capital and lowercase versions of both letters, b and s.

This means the genotype has to be heterozygous for both the B and S traits, since the foiled results have both dominant and recessive alleles.

So, the genotype must be C, BbSs

The foiled results of the genotype for the offsprings include BS | Bs | bS | bs.

The parent's genotype will then be BbSs.

The genotype of both parents have to be heterozygous as a result of the

presence of its forms in the B and S traits. There is the presence of the

dominant (B,S) and recessive traits (bs).

The genotypes of the parent will however have both traits in them which

translates to the option C) BbSs being the most appropriate.

Read more on https://brainly.com/question/21102431

what biotic factors in the taiga are different from the biotic factors in the rainforest

Answers

Answer:

flora and fauna and also some types of invasive species

help plzzzzzzzzzzzzzzzzzzzzzz

Answers

The third answer down.

Answer:

C

Explanation:

hope this helps :)

Enviromental quality refers to the quality of the total enviroment, including both the natural and the __ enviroment ?

Answers

Answer:

Environmental quality refers to the quality of the total environment, including both the natural and the built environment.

Natural Environment- Plants, animals, natural resources, etc.

Built Environment- Man-made structures and facilities.

Let me know if this helps!

i need help cant get this one wrong

Answers

Answer:

ik that 1 goes to blue

Explanation:

(DONT MIND THE FACES I PUT) Which of the following is an example of maintaining homeostasis?


A. Learning :I

B. Sweating :o

C. Playing :)

D. frowning :(

Answers

Learning so a I hope it’s right

Answer:

sweating

Explanation:

The body maintains homeostasis by eliminating these substances through the urinary and digestive systems. An individual simply urinates and defecates the toxins and other nasty things from the blood, restoring homeostasis to the human body.

A building company purchases a large plot of forest-like land with the intention of building a new residential neighborhood. This forest-like area is home to 2 types of squirrels: tree squirrels and ground squirrels. Tree squirrels have bushy tails, longer legs, sharp claws for climbing, and large ears. Ground squirrels have shorter legs, less sharp claws, and less bushy fur. In order to build the houses, the company knocks down 80% of the trees. Which squirrel population was better fit for the change of the environment
a Ground squirrels because they did not require trees for survival.
b Tree squirrels because they require trees for survival.
c Ground squirrels because they can use their sharp claws to climb trees.
d Tree squirrels because they can use their sharp claws to burrow into the ground.

Answers

i’m thinking that it is A.

What are the functions of carbohydrates, peripheral proteins, and cholesterol in the cell membrane?

Answers

Answer:

Some of these proteins serve to transport materials into or out of the cell. Carbohydrates are attached to some of the proteins and lipids on the outward-facing surface of the membrane. These form complexes that function to identify the cell to other cells.

help me out please! ​

Answers

Answer:

223

Explanation:

Answer:

the answer is c because it grabs carbon and turns it into oxygen which is what we breath

What is a zero of the following function: f(x)=3x-15?

Answers

Answer:

-15

Explanation:

f(x) = 3x-15

f(0) = 3 (0) -15

3* 0 = 0

0-15 = -15

A form of arthritis is a common complication of dysentery.

True
False

Answers

Answer:

false

Explanation:

5. By about how much did average global temperatures increase from 1880 to
2020?*

Answers

2 degrees Fahrenheit and ~ 1 degree Celsius

(GIVING BRAINLIEST!!!!!)

Answers

Answer: last one

Explanation: the 1st screenshot is sleet 2nd is hail and you can see how big the hail is

it’s the last option!!

Who was the first scientist to monitor the movement of the stars and moon?

Aristotle

Hedu’Anna

Archimedes

Copernicus

Answers

Answer:

Aristotle

Explanation:

Aristotle created his own system for mapping the stars first, the others studied and discovered things in different subjects. :)

Answer:

Isn't it Galileo.

I think it is Galileo

Choose the option that brings out the meaning of embrace, as used in the given textual sentence.

That’s a strong reason to embrace sustainable fashion in India.

a) Artists in India are embracing new technology alongside traditional methods.

b) His new job embraces a number of activities—composing, playing, and acting.

c) The shawl manufacturer embraced the designer warmly for the creative design.

d) Grandmother frequently embraces us irrespective of our fashion choices.​

Answers

b
his new job zembraces a number of activities

Which factor determines who a society will produce goods and services for?
A.
the economic system in the society
B.
the available resources in the society
C.
the population of the society
D.
the external sector of the society

Answers

Answer:

the economic system in the society

The answer is A. The economic system in the society

What is the main cause of pollution

Answers

Answer:

Humans

Explanation:

The main cause of pollution is the burning of fuel, over-use of fertilizers and pesticides, carelessness, and the improper disposal of waste. And who does this? Not casper, not pennywise, not animals, but us humans. So we are the main reasons why pollution exist.

You can just write what causes pollution (the underlined), you dont need to write about who causes it.

Hope this helped!

Have a supercalifragilisticexpialidocious day!

What are five similarities and five differences between sharks and bony fishes?

Answers

Hey There!_____________________________________Answer:

[tex]\Huge\text{Pisces or Fishes}[/tex]

Pisces or Class Fish is the largest group of chordates which includes 25000 species of fishes. Study of fishes is called Ichthyology.

Fish is an aquatic gill breathing gnathostomates whose stramlined body is provided with paired fins and covered over dermal scales.

Super Class pisces is divided into two classes:

Chondrichthyes Osteichthyes _____________________________________

[tex]\Huge\textbf{Chondrichthyes}[/tex]

Chondrichthyes are Cartilagineous fishes. This class is also called Elasmobronchi. It has exclusively marine fishes with endoskeleton made of cartilage. Their skin has tiny shark enamel coated denticles called Placoid Scales. They are heterocercal and Mouth is present at ventral to tail fins. They have exposed 5 gills on each sides.

Example Shark, Ray fishes, Dog dish etc

_____________________________________

[tex]\Huge\textbf{Osteichthyes}[/tex]

These fishes are Bony Fishes. This group is also called Teleostomi, They are found in both marine and fresh water. Their endoskeleton is made up of bones. Their skin has thin bony plates called cycloid or ctenoid. Their gills are covered with outer skin called operculum. Tain fin is homocercal and mouth is present at anterior tip.

Examples Sea Horse, Gold fish, Eel etc

_____________________________________[tex]\huge\text{Similarities}[/tex]They have gill to breath Streamlined body to move in fast moving water All fishes are cold-blooded. Fins are present for locomotion They have great sense of smell They have air bladder to be bouncy

[tex]\Huge\text{Dissimilarities}[/tex]

Chondrichthyes are exclusively marine fishes while Osteichthyes are both fresh water and marine water living.The skeleton of Chondrichthyes is made of cartilage while the skeleton of Osteichthyes is made of bones.The gills of Chondrichthyes is NOT covered with operculum while the gills of Osteichthyes are covered with outer skin operculum.  The skin of Chondrichthyes has tiny shark enamel coated denticles called Placoid Scales while the skin of Osteichthyes has thin bony plates called cycloid or ctenoid.The tail of Chondrichthyes is Heterocercal and mouth is ventral to the tail fins while the tail of Osteichthyes is homocercal and the mouth is present at anterior tip._____________________________________Best Regards,'Borz'

Is Type 2 Diabetes Inherited?

Answers

No type 2 diabetes is not inherited.
I think it depends on a persons lifestyle and if they have family members with type 2 diabetes then they are most likely to get it too. So no.

What is an observation? What do you use to make an observation?

Answers

Answer: we can make observations directly by seeing, feeling, hearing, and smelling, but we can also extend and refine our basic senses with tools: thermometers, microscopes, telescopes, radar, radiation sensors, X-ray crystallography, mass spectroscopy, etc. And these tools do a better job of observing than we can!

1 Invasive plant species affect the interactions of living and nonliving components
of an ecosystem, so the removal of invasive plants is often necessary. The goal of
most plant-control methods is to disrupt or inhibit the function of different plant
systems. For example, insects can be used to chew through roots in order to
reduce a plant's ability to absorb water.
Which of these functions would be most immediately affected by a reduction in water
uptake by roots?
A Disease resistance
B Seed dispersal
C Sunlight absorption
D Photosynthesis

Answers

Answer: photosynthesis

Explanation:

Answer:

D. Photosynthesis

Explanation:

I got it "Correct"

What structures are responsible for the movement of chromosomes to the center of the cell in metaphase and their separation in anaphase?

Answers

The structures that are responsible for the movement of chromosomes to the center of the cell in metaphase is the spindle fibers, the cell attaches the centromeres to the spindle fibers to pull the sister chromatids to the center

In anaphase the sister chromatids are separated at the centromere and are pulled to the opposite poles of the cell by the spindle fibers

The taxonomic classification that contains the most organisms and is the MOST inclusive is

Answers

Answer:

Domain

Explanation:

A domain is the most inclusive of the levels

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