g Would an observational study or an experiment be more appropriate to investigate the effects on fertilizer on plant growth? Explain.

Answers

Answer 1

Answer:

The economists typically receive information premised upon the information gathered during controlled studies. A further explanation is provided below.

Explanation:

The investigators typically add particular manipulation throughout the observational investigation and analyze the consequences.The survey was performed here because the investigators simply would be required to examine the influence of fertilizer on the development of plants. Each assistance must be applied.

Related Questions

A 45-year-old woman named Christine is measured as having the following skinfold thicknesses on the right side of her body: Triceps: 14mm; Thigh: 32mm; Suprailium: 28mm. Estimate her body fat percentage.

Answers

Answer:

The skinfold method, the measurement of subcutaneous fat folds, is the most widely adopted field method for the assessment of body fat, especially in children.

It is based on the principle that fat is of a known density and by “summing” measurements of subcutaneous fat thickness across the body, total and regional fat can be estimated.

Skinfold thickness measurements are typically used to rank individuals in terms of relative total “fatness”, or to assess subcutaneous fat at various regions of the body.

Population specific equations are used to derive estimates of percent body fat.

In infancy, it might be the sole tool available for assessing body composition longitudinally as other methods may not be feasible, or may only be suitable for use at body sizes e.g. PEA POD, can only measure infants up to 10kg.

The most generally used field method for determining body fat, particularly in kids, is the skinfold method, which involves measuring subcutaneous fat folds.

What is skinfold method?

Skinfold method is defined as a method for determining how much body fat there is. It entails delicately pinching the skin and underlying fat in several locations using a tool called a caliper. To acquire precise findings using this quick and easy body fat estimation technique, a high level of competence is needed.

It is based on the idea that since subcutaneous fat thickness measurements may be "summed" to estimate total and regional fat because subcutaneous fat has a known density. Measures of skinfold thickness are widely used to categorize individuals based on their relative degrees of overall "fatness" or to assess subcutaneous fat in various bodily regions. Estimates of the percent body fat are derived using equations that are specific to a population.

Thus, the most generally used field method for determining body fat, particularly in kids, is the skinfold method, which involves measuring subcutaneous fat folds.

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Explain how the ear helps humans in balancing.​

Answers

Answer:

The vestibular system which is essential to our sense of balance is located within the inner ear

Explanation:

The vestibular system is the sensory apparatus of the inner ear that provides the brain with the information required for maintaining body balance (postural equilibrium), detecting the position and motion of the head and determining the position of the whole body in relation to gravity. The vestibular system in each inner ear is composed of five organs: 3 semicircular ducts located in the innermost part of each ear (i.e., the inner ear), which are sensitive to angular accelerations (head rotations), and 2 otoliths organs referred to as the utricle and saccule, which are sensitive to linear accelerations. Each semi-circular duct exhibit a different orientation (superior, horizontal, and posterior) in order to sense different movements (e.g. nodding, rotating).

different evolution theory of living organism​

Answers

Answer:

(I) Lamarckism or Theory of Inheritance of Acquired characters.

This theory is based on the comparison between the contemporary species of Jean Baptiste de Lamarck's time to fossil records.

(II) Darwinism or Theory of Natural Selection.

Charles Darwin made an extensive study of nature for over 20 years, especially in 1831-1836 when he went on a voyage on the famous ship “H.M.S. Beagle” and explored South America, the Galapagos Islands and other islands.

(III) Mutation theory of De Vries.

The mutation theory of evolution was proposed by a Dutch botanist, Hugo de Vries (1848-1935 A.D.) in 1901 A.D. in his book entitled “Species and Varieties, Their Origin by Mutation”. He worked on evening primrose (Oenothera lamarckiana).

(IV) Neo-Darwinism or Modern concept or Synthetic theory of evolution.

The detailed studies of Lamarckism, Darwinism and Mutation theory of evolution showed that no single theory is fully satisfactory. Neo-Darwinism is a modified version of theory of Natural Selection and is a sort of reconciliation between Darwin’s and de Vries theories.

8. Two rabbits are bred together. One is heterozygous for agouti coat
(genotype: Cch) and the other is albino. What are the possible phenotypes
of their offspring? Construct a Punnett square to support your answer.

Answers

Answer:

- Parental cross = Cch  x chch  

- F1 = 1/2 Cch (agouti coat); 1/2 chch (albino coat) >> 1:1 phenotypic ratio

Punnett  square:  

          ch         ch

C       Cch       Cch

ch    chch      chch

 

Explanation:

A heterozygous individual is an individual who has two different gene variants (i.e., alleles) at a particular locus. In this case, individuals having the "agouti coat" trait are heterozygous carrying both 'C' and 'ch' alleles. On the other hand, a homo-zygous individual has the same allele at a given locus (here, the 'chch' genotype associated with the albino phenotype). Therefore, as observed in the Punnett Square above, when a heterozygous parent is crossed with a homo-zygous recessive parent for a single gene, alleles segregate in the gametes of both parents so an expected 1:1 phenotypic ratio will be observed.

Natural selection is most likely to be the cause of a change in a population's
allele frequencies when:
A. the ecosystem experiences few disturbances,
B. the population drops below its carrying capacity.
C. the predators are removed from the ecosystem,
D. the population has reached its carrying capacity.
PLEASE HELP URGENT

Answers

Answer:handheld c

Explanation:bend c smlOc

C is probably the right answer to me

A newly discovered pigmented microbe contains a capsule and flagella, but no chloroplasts or cilia. This microbe is approximately 2 microns in size, and divides by binary fission. The nucleic acid of this microbe is packaged within an envelope. Based on this information, is this microbe a eukaryote or a prokaryote? Explain the reasoning behind your answer.

Answers

Answer:

in which grade did u read

what are the difference between DNA and RNA​

Answers

Answer:

There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.


Which explains why this is the case

Answers

Answer:

i dont know cause the question is missing

Explanation:

Find the number of chromosomes are in each daughter cell when a sperm cell with a diploid number of 26 chromosomes undergoes meiosis process​

Answers

Answer:

At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes.

g Jack fell down and broke his crown. He broke the most anterior bone connected to the coronal suture. What LETTER is this, and what is the NAME of this bone

Answers

Coronal suture. This extends from ear to ear. Each frontal bone plate meets with a parietal bone plate at the coronal suture.

Write the events of the human life cycle in the correct order, starting with what happens right after a pair of gametes comes together?

Answers

Answer: Fertilization occurs, a zygote undergoes mitosis, a baby's cells divide mitotically, meiosis produces sex cells that will participate in fertilization.

Explanation:

Incomplete questions, options are:

Meiotic cell division occurs as the zygote develops into a gamete, meiosis produce the sex cells that will participate in fertilization, a baby grows into an adult through uncountable meiotic divisions, fertilization occurs, a zygote undergoes mitosis, a baby's cells divide mitotically, mitosis produces gametes.

1. Fertilization occurs: Fertilization is the union of a human egg and sperm (male and female gametes), which usually occurs in the fallopian tube. The result is the formation of a zygote or fertilized egg, which initiates the development of the embryo. In this way, the genetic material of both gametes is also fused.

2. A zygote undergoes mitosis: The zygote is the union of the egg and the sperm. Each gamete contributes 23 chromosomes to form the genetic material of the future organism. The zygote starts to divide throught mitosis. Mitosis is a type of cell division that generates two genetically identical daughter cells and occurs in somatic cells (all cells in the body that are not gametes). Eventually, it divides into two blastomeres, then into 4, then into 8, and so on during the passage of the zygote along the fallopian tube towards the uterus. Subsequent divisions of the 12 cells give rise to the morula. Then, the blastocyst is generated, which is an embryo of between 5-7 days of development and is composed of a large number of cells that begin to differentiate.

3. A baby's cells divide mitotically: An embryo is a living being in the early stages of its development, from fertilization until the organism acquires the morphological characteristics of the species. In the specific case of the human being, the term applies until the eighth week after conception (fertilization). Cell divisions for development occur by mitosis. In this way, the embryo will grow and develop, forming tissues and organs through growth thanks to mitotic divisions.

4. Meiosis produces sex cells that will participate in fertilization: Meiosis is a type of cell division that occurs in the gonads for the production of gametes, whereby a diploid cell undergoes two cell divisions, that generates four haploid cells. Thus sperm and oocytes are produced to eventually fuse during reproduction to form a diploid zygote. Meiosis has certain differences from mitosis, since in this type of cell division, the daughter cells created are all genetically distinct from each other and from the parent cell. This is because a crossing over occurs between non-sister chromatids of homologous chromosomes to exchange genetic material. This ensures that each gamete produced has genetic variability.

Which of the following particles has no charge?
O A. Electron
O B. Neutron
C. Proton
D. Ion

Answers

Answer:

B. Neutron.

Explanation:

[tex]{ \tt{ {}^{1} _{0}{ \huge{n}} }}[/tex]

This one too, please?

(3rd time)


I need explanation for your answers, even though it's multiple choices, I still need your explanation for it.

DUE TOMORROW!

If your answer is NONSENSE it will be deleted as soon as possible!

But if your answer is CORRECT, HELPFUL, HAS AN EXPLANATION, I'll chose your answer as the BRAINLIEST ANSWER!​

Answers

Answer:

1, group 1

2 group 7

3 group 2

4 D

5 B

6 A

Answer:

7. A 1

8. C 17

9. B 2

10. (d) C and D

11. (b) reactivity

12. (a) corrosion

13. (c) activity series

Explanation:

7. , 8, and 9,

Group 1 elements are named as alkali metals

Group 2 elements are known as alkaline earth metals

group 17 metals are known as halogens

10.

Na and Xe have one valency whereas the other two elements have variable valency which is a property of transition metals so the answer is (d) C and D

11.

It;s the definition of reactivity

12.

Definition of corrosion

13.

definition of activity series

define cell and atom​

Answers

Answer:

hope it is helpful to you

help me what is this stuff please i really need halp

Answers

Answer:

i dont no the answer

Explanation:

hahahahahahahahahahahahahahahahahahahahahahahhahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahhahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahah

I need help asap
I need help asap​

Answers

Answer:

c

Explanation:

i dont care

how many people in the world​

Answers

Answer:

khjdaVSJHv

Explanation:ASjkbxzjb

SCamzhb

Look at the scientific names for the two organisms below:

Felis domesticus
Felis bengalensis

What can you tell about these two organisms from their scientific names?
A.
You cannot tell anything about an organism from its scientific name alone.
B.
The organisms are different subgroups of the same species.
C.
The organisms are different species but belong to the same genus.
D.
The organisms belong to the same kingdom but different phyla.

Answers

Answer:

B. The organisms are different subgroups of the same species.

QUESTION:-

Felis domesticus (Domestic CAT)

Felis bengalensis (Leopard Cat)

What can you tell about these two organisms from their scientific names?

A.

You cannot tell anything about an organism from its scientific name alone.

B.

The organisms are different subgroups of the same species.

C.

The organisms are different species but belong to the same genus.

D.

The organisms belong to the same kingdom but different phyla.

ANSWER:-

FIRST PART IS THE GENERIC PART ( genus name )

SECOND PART IS THE SPECIFIC NAME ( specific epithet )

ATQ:-

AS THE GENERIC OR GENUS NAME SAME SO THEY BELONG TO SAME GENUS

BUT DUE TO DIFFERENT SPECIFIC NAME OR SPECIFIC EPITHET WHICH SHOWS THAT THEY BELONG TO DIFFERENT SPECIES .

SO URE ANSWER IS PART C->

C. The organisms are different species but belong to the same genus.

10.
All of the following are examples of specialized cells except

Answers

Answer:

Zygote

Explanation:

A mutation is identified in a tumor sequencing study. Which of the following pieces of evidence would most strongly suggest that the mutation is a passenger mutation?
a. The same gene is mutated in many other individuals with the same kind of cancer.
b. The mutation impacts the function of a known tumor suppressor gene.
c. The mutation is a silent point mutation in a protein-coding sequence.
d. The gene carrying the mutation is known to participate in the cell cycle.

Answers

Answer:

The mutation is a silent point mutation in a protein-coding sequence.

Explanation:

A mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. Mutations can be damaging or beneficial.

There are two types of mutations in cancerous cells:

· Driver mutations, which refer to genetic changes that provide malign cells an adaptative advantage. These mutations drive the cells to tumoral evolution.

· Passenger mutations, also known as neutral mutations, refer to those that do not provide any advantage nor disadvantage to the cancerous cell. These mutations can be between DNI segments where the driver mutations are. Some of these passenger mutations might become driver mutations with time.    

The Hardy-Weinberg principle is written as the equation p2 + 2pq + q2 = 1. What does prepresent?

Answers

Explanation:

Hardy-Weinberg principle can be illustrated mathematically with the equation: p2+2pq+q2 = 1, where 'p' and 'q' represent the frequencies of alleles. ... The principle behind it is that, in a population where certain conditions are met (see below), the frequency of the alleles in the gene pool will be constant.  

Activity 3: Direction: Study the picture. Write the phases of the moon 1 new moon O first quarter O MOON PHASES last quarter waning crescent woving crescent Waning gibbous working globos​

Answers

Answer:

1.full moon

2.waxing gibbous

3.first quarter

4.waning gibbous

5.new moon

6.wabing cresent

7.last quarter

8.waxing cresent

what is the function of the liver?

Answers

Answer:

The Liver Stores Glycogen and Vitamins.

Its helps in Excreting Bilirubin which is produced from the breakdown of Red Blood Cell(RBC).

It also helps In the Production of Bile(This is stored in the gall bladder).

Note that arteries have a thicker middle layer of tissue than veins. Why is this important and how does it affect the structure of the artery as compared to the vein?

Answers

Answer:

The correct answer is - To withstand the high pressure of the outflow of blood from the Heart.

Explanation:

The heart pumps blood to different body parts at high pressure so that it can easily reach all the parts of the body quickly. To able to hold the pressure of the blood pumped at high-pressure arteries need thick walls.

This pressure can be experienced as pulse and which required the walls of arteries and the middle layer or the tunica media to make it much thicker in arteries than in veins. In veins pressure caused by blood is very low pressure that allows them to be thin walls.

which fundamental units are involved in force do step Wise ​

Answers

Force = ma

We know, the unit that the S.I. unit of mass is Kg.

We also know that a = (v - u)/t.

We know that v = d/t and u = d/t and the S.I. unit of t(time) is s.

We know that the S.I. unit of d(displacement) is m.

So, the S.I. unit of v is m/s and the S.I. unit of u is m/s and the S.I. unit of t is s.

So, the S.I. unit of a is m/s×s or m/s²

So, the unit of force is

(unit of m) × (unit of a)

= kg × (m/s²)

= kg.m/s²

=

[tex]kg \: m \: {s}^{ - 2} [/tex]

Or more simply,

F = ma

=> F = m{(v-u)/t}

Putting units,

Newton = kg[{(m/s) - (m/s)}/s]

=> Newton = kg{(m/s)/s}

=> Newton = kg(m/s²)

=> Newton = kg.m/s²

=> Newton = kg.m.(s^-2)

Which of the following sentences uses commas correctly? Carol was the last person out of the house wasn't, she? Carol was the last person, out of the house wasn't she? Carol was the last person out of the house, wasn't she? Carol, was the last person out of the house wasn't she?

Answers

Answer:

The third sentence......................

Explanation:

The correct sentence is Carol was the last person out of the house, wasn't she?

Why is a comma important?

Commas help your reader figure out which words go together in a sentence and which parts of your sentences are most important. Using commas incorrectly may confuse the reader, signal ignorance of writing rules, or indicate carelessness.

What are the Rules of commas?

Comma Rules

Use a comma after an introductory phrase or clause. Use commas before and after a parenthetical phrase or clause. Use a comma to separate two independent clauses linked by a coordinating conjunction (and, but, for, nor or, so, yet) Use a comma to separate items in a series.

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The coding RNA in a cell at particular time is comprised of
A. total mature mRNA
B.whole RNA
C. hnRNA
D.4% of total coding RNA

Answers

B whole RNA that is the correct answer

Discuss the internal and external structure of the testise​

Answers

Answer:

External- The testes are covered by a tough membranous shell called the tunica albuginea. Within the testes are very fine coiled tubes called seminiferous tubules. The tubules are lined with a layer of cells (germ cells) that develop from puberty through old age into sperm cells (also known as spermatozoa or male gametes).

Internal -Each testicle is covered by tough, fibrous layers of tissue called the tunica. The outer layer is called the tunica vaginalis and the inner layer is called the tunica albuginea. ... There are about 800 seminiferous tubules tightly coiled within each testicle.

How many cranial nerves is it?

Answers

Explanation:

there are 12 cranial nerves

Discuss the role of the
kidney in
1. Regulation of blood pressure.
2. Regulation of ECF volume and electrolytes.

Answers

Answer:

blood pressure is regulated by baroreceptors which act via the brain to influence the nervous and the endocrine systems. Blood pressure that is too low is called hypotension, pressure that is consistently too high is called hypertension, and normal pressure is called

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[10 points] Write a program to compute the sum of digits in a number given by the user. You must use your own function to compute the sum of digits. Solve the equation for x.5x - ( 4x - 1) = 21a.C.19bib. - 1d.1 The difference between active transport and passive transport is that a. concentration gradients are involved in one and not in the other. b. glycolipids play a role in one and not in the other. c. one requires expenditure of energy by the cell and the other does not. d. ions are transported into and out of the cell by one process and not by the other. Results of testing for HIV/AIDS can be obtained in:30 minutes3 days3 weeks30 days I NEED HELP WITH THIS!! 50 POINTS!!! Drag each system of equations to the correct location on the table.Classify each system of equations as having a single solution, no solution, or infinite solutions. PLS HELP ME ON THIS QUESTION I WILL MARK YOU AS BRAINLIEST IF YOU KNOW THE ANSWER!!Which of the following statements is incorrect about the data set that includes 1,2,3,4,5,6,7?A. The data set has no modeB. The data set has a second quartile of 6C. The data set has the same mean and medianD. The data set has an interquartile range of 4 Find the Quotient. Do NOT round22.14 divided by 1.2 You are an HR manager. Write an email (120 - 140 words) to your company's new employees about things they should/ should not do on their first day at work. Use the following suggested questions:OutfitTime to workTopic What is the value of x?Enter your answer in the box.X = which choices are equivalent to the exponential expression below? check all that apply. 5/3^3Answers: 5^3/3^33 x (5/3)25/915/95/3 x 5/3 x 5/3125/27 Please help please !!! 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ASAP YOUR DA BEST! 15 POINTS YALL who is dajjal?????One of the greatest devils ever It will appear to deceive people to worship and worship. Intoxicated people into ignorance and ignorance, society will be filled with vile, vile, vain, and chaos. It will enslave people. lead people to misery The era it occupied was an era full of vices and vices. unfair People will suffer great tribulation because they will reap benefits from the land and from the people. and forced people to be under its power. and it has both material and spiritual powers. The Prophet Muhammad (PBUH) called it "Ad-Dajjal" or "Dajjal", meaning "Dajjal" in Arabic means "liar and deceitful". or "the deceiver" from the evidence that has been taught more than 1400 from the teachings of the Prophet Muhammad (pbuh) is found in the texts that have been reported inherited by the narrator (Al Hadi) d) of the Prophet Muhammad (PBUH) that can be summarized as follows:1- Its face is bright white. but his right eye is completely blind. and his left eye lit up. and looks bulging out (Reported by Bukhari 77:68-92 and Ahmad's Musnad, Volume 1, pages 240374).2- It will appear from the eastern territories. There was a vehicle of a white donkey, the length of each ear was 30 yards, one step of it. equal to walking one day Its vehicles will travel faster. Like a cloud blown by the wind (Reported by Abu Dawud, Sunan, Khanz al-Ummal, volume 7, pages 1998 - 2104, and in Mishkat al Masabih chapter Fina. h).3- It can control the rain to fall to the ground. and it will produce crops(Mishkat Al Masabih chapter Fitnah).4- It will cause great misery to mankind. which has never been in trouble Or any test will be equal to the test of Dajjal from the creation of man until the day of resurrection.(Mishkat Al Masabih and Khanz Ab Ummal Chapter 7, page 2028).5- His wealth will be innumerable upon the face of the earth. 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