Which of the following was a control variable in this experiment?
A Type of soil
B Amount of water
C Height of plants

Answers

Answer 1

Answer:

b

Explanation:

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Related Questions

Infinity of biology ​

Answers

Answer:

Origin: L. Infinitas; pref. In- not – finis boundary, limit, end: cf. F. Infinite. See Finite.

1. Unlimited extent of time, space, or quantity; eternity; boundlessness; immensity. There can not be more infinities than one; for one of them would limit the other. (Sir W. Raleigh)

2. Unlimited capacity, energy, excellence, or knowledge; as, the infinity of god and his perfections.

3. Endless or indefinite number; great multitude; as an infinity of beauties.

4. (Science: mathematics) a quantity greater than any assignable quantity of the same kind.

Mathematically considered, infinity is always a limit of a variable quantity, resulting from a particular supposition made upon the varying element which enters it.

5. (Science: geometry) That part of a line, or of a plane, or of space, which is infinitely distant. In modern geometry, parallel lines or planes are sometimes treated as lines or planes meeting at infinity. Circle at infinity, an imaginary circle at infinity, through which, in geometry of three dimensions, every sphere is imagined to pass. Circular points at infinity. See Circular.

Explanation:

The most important factors which limits the number of animals that can live in a biome is?

Answers

Answer:

Explanation:

Most organisms are adapted to live within a particular range of temperatures and will not survive at temperatures too far above or below their range. Precipitation limits the organisms that can be found in a biome because all organisms need water, and the bigger the animal, the more water it needs.

12. The best plate to cultivate enteric bacteria is?
A. EMB
B. Blood agar
C. Mannitol salt
D. Sabouraud agar plate

13. The Ingredient in Hektoen plate which makes the agar selective is?
A. Salt
B. Glucose
C. Mannitol
D. Bile acids

14. The enteric plates are only allowing the growth of ?
A. Gram negative bacteria
B. Gram positive bacteria
C. Anaerobes

Answers

Answer:

A.) EMB (Eiosin Methylene Blue)

B.) Hektoen Agar contains Bile salt which makes it selective medium.

C.) Gram Negative

which of the following animals has a large intestine that serves as a site for fermentation as well as absorption of water and electrolytes
A sheep
B horse
C Dog
D Cat

Answers

I think the answer should be B. Horse

Wave frequency is measured in units
called Hertz (Hz). One Hertz is defined as
one wave per second. Suppose a person
counted 10 waves passing by over a time
period of 1 second. What is the wave
frequency?

Answers

Answer:

it will be 10Hz ,because number of waves per second is 10 so we divide with 1second

The wave frequency of a wave which is passing by 10 waves over a time period of 1 second will be 10 Hertz (Hz).

What is Wave frequency?

Wave frequency can be defined as the number of waves which are passing through a fixed point in a given amount of time period. The SI unit for the wave frequency is the hertz (Hz), where 1 hertz is equal to 1 wave which is passing through a fixed point in the time period of 1 second. A higher-frequency wave has generally more energy than a lower-frequency wave with the same magnitude of amplitude.

The wave frequency of a wave which is counted to be 10 waves passing through a point in a time period of 1 second will be 10 Hertz (Hz).

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How many organisms in the food web feed on the mice? A. 5 B. 2 C. 3 D. 4

Answers

Answer:

B

Explanation:

Answer:

B

Explanation:

Only the Owl and the Snake feed on the mice, SO answer B "2" is correct

PLEASE HELP ME OUT KINDA URGENT

Answers

Answer:

the first one

eselson and Stahl relied on equilibrium density gradient centrifugation to resolve the DNA containing 14N from the DNA containing 15N.They started off with DNA in media containing the heavy isotope, then switched to media containing the lighter isotope and allowed DNA replication to take place. Under semiconservative model of DNA replication, after THREE rounds of replication, how many bands of DNA would you see and which band would contain more DNA molecules

Answers

Answer:

The correct answer would be - two bands ( one intermediate, and one light)- the light band contains more DNA molecules.

Explanation:

After the switching to the lighter isotope by the second round of replication where light strands are used as template strands, produces the light band of 14N.

After three rounds of semiconservative replication, where template strand contains both heavy and new formed light bands or nitrogen and produces so in a Density gradient, there will be 2 bands one light band and the other intermediate band.

hello people of brainly

Answers

Answer:

a scientist should observe the natural world without changing or destroying it

2. Define the structure of DNA by filling in the
descriptions below

Answers

Answer:

Please refer to the explanation below.

Explanation:

The sugar and phosphates molecules form the sides of the helix.

The nitrogen bases form the teeth of the helix.

Each nucleotide is made of a nitrogen base, a sugar, and a phosphate group.

5×8+2÷2×3
what is the answer

Answers

Answer:

is this a joke

Explanation:

5/8 : 2 2/3 = 1564 = 0.234375

HELP ASAP PLEASE I WILL MARK BRAINLY

David roller skates 42 Km in 3 1/2 hours. What is his average speed in kilometers per hour? Speed =​

Answers

Answer:

12km

Explanation:

This is pretty easy, all you have to do is divide 42 by 3.5 and then you get 12<3 hope that helps!!

I think 12 km/hr
Not sure tho

How much is )377373737373837828827383783737737+73737737374747774747478382828828287739278

Answers

Answer:

7.3737738e+40

Explanation:

pls foll ow me

i will foll ow back...

Which type of plant lives the longest?
a.annual
b.biennial
c.perennial
d.none of the above

Answers

Answer:

c. perennial

Explanation:

A silver maple oak tree is an example of a perennial as it can live hundreds of years

Look at the graph below. Which of the following stars is most likely to be red? (5 points) a Star A b Star B c Star C d Star D

Answers

Answer:

????

Explanation:

Hey! I hope you had a great day so far :)

But uh...

I cannot answer that question for you.

There are no "stars" and definitely no graph on a file attached.

Sorry!

Helper's Message:

Hey, I hope you can give me a Brainliest :)

-ChocoChocoCho

Answer:

?????

Explanation:

you didn't add the graph but I'm sure that you will figure the answer out I believe in you. have a great day and 2022

Please help, thank you

Answers

Answer: what does the question say i cant see the attachment?

Explanation:

Answer: 3. anticodon, 4. amino acid, 5. In stage one, glucose is broken down in the cytoplasm of the cell in a process called glycolysis. 6. The process of gene expression involves two main stages: Transcription: the production of messenger RNA (mRNA) by the enzyme RNA polymerase, and the processing of the resulting mRNA molecule. 7. 64. 8. One codon, AUG, specifies the amino acid methionine and also acts as a start codon to signal the start of protein construction. There are three more codons that do not specify amino acids. These stop codons, UAA, UAG, and UGA, tell the cell when a polypeptide is complete. 9. In the process of translation, the mRNA attaches to a ribosome. Next, tRNA molecules shuttle the appropriate amino acids to the ribosome, one-by-one, coded by sequential triplet codons on the mRNA, until the protein is fully synthesized. When completed, the mRNA detaches from the ribosome, and the protein is released. plzz mark brainliest

Explanation:

Michael discovers that a fish breathes less often in cool water. He correctly hypothesizes that A. the fish slows down in cool water, and does not need as much oxygen. B. the fish is eating, and does not have time to breathe as much. C. the fish is sleeping, and does not need as much oxygen. D. there is less oxygen in cool water, so the fish breathes slowly.

Answers

Answer: then it’s d there is less oxygen in cool water

Explanation:

There are many explanations for Michael's observation that fish breathe less frequently in cold water. However, his hypothesis that the fish returns to the cold water and requires less oxygen seems possible.

What type of animals fish are?

Fish are cold-blooded animals, which means their environment controls their body temperature. Their metabolic rate, activity level, and oxygen requirements decrease as water temperatures drop.

As a result, fish can slow down in cold water, reducing their oxygen demand and reducing their breathing rate.  Oxygen solubility may also play a role in whether fish breathe less in cold water. As the water temperature decreases, the ability of oxygen to dissolve in the water also decreases. Because of this, cold water can have less oxygen available, which can cause fish to breathe more slowly to compensate for the lack of oxygen.

Because fish need oxygen to digest food, they are likely to eat and breathe less. It's basically a joke that the fish are resting because fish don't have an obvious resting cycle and will move and swim when they are resting.

Finally, Michael's hypothesis that fish breathe less in cold water is plausible as it suggests that fish slow down and don't need as much oxygen.

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Which of the following is the reason in how the anterior pituitary differs from the
posterior pituitary?
O A) the hypothalamus controls the release of posterior pituitary hormones but not the anterior
pituitary
B) the anterior pituitary makes its own hormones; the posterior pituitary releases hypothalamic
hormones
C) the posterior pituitary works independently of the hypothalamus
D) the anterior stores hormones produced by the posterior pituitary

Answers

Answer:

B) the anterior pituitary makes its own hormones; the posterior pituitary releases hypothalamic hormones

Explanation:

The pituitary gland is referred to as "master gland" because it coordinates the activities of other endocrine glands. The pituitary gland is composed of two lobes namely: anterior pituitary and posterior pituitary. These two lobes are individually controlled to release several hormones by the HYPOTHALAMUS.

However, one major difference between the anterior and posterior pituitary lobe is that; the posterior pituitary DOES NOT MAKE ITS OWN hormone, hence, releases the hormones (oxytocin and ADH) it stores but produced by the HYPOTHALAMUS. On the other hand, the anterior pituitary PRODUCES ITS OWN hormones but waits for hypothalamic signal to release them.

What is a frog's habitat?
R. the flies that it eats
S. the green skin coloration
T. a forest pond
V. the total number of frogs in the area​

Answers

The answer is T
Expiation

Ernest was looking at the following diagram of a cell. Which statement best explains how he should classify the cell?

A) He should classify the cell as a plant cell because it has a cell membrane.
B) He should classify the cell as an animal cell because it has a flagellum.
C) He should classify the cell as a plant cell because it has cytoplasm.
D) He should not classify the cell as either a plant cell or an animal cell.

Answers

Answer:   Its d

Explanation:

WILL GIVE YOU 40 POINTS AND BRAINLINESS PLZ HELP URGENT!!!
Choose one of the following scenarios and answer the questions provided. Support your answers using scientific reasoning and discussing possible impacts to individuals, society, and the environment. Be sure to also discuss any medical or ethical issues that may apply. (10 points)
Scenario 1:

Genetic engineering can be used to create more productive strains of farm animals. By adding genes to an animal's DNA, the animal can be made to produce milk or meat containing vital nutrients that would not be found naturally in those products. This provides a greater amount of nutrients per serving of milk or meat.

Do you think that this type of genetic engineering should be pursued? Explain your answer. (5 points)

What are some possible impacts (positive and negative) of this type of genetic engineering on individuals, society, and the environment? (5 points)

Scenario 2:

In the future, doctors may be able to evaluate your DNA to check for genetic markers related to specific medical conditions or harmful reactions to medications. Your personalized genetic profile could be kept on record and referred to in order to develop personal medical treatment based on your unique DNA sequencing. Scientists have found that just small variations in a specific section of your DNA can help determine how well some medications can work for you or if they would be beneficial at all.

Would you want to have your DNA profile kept in your medical record as a reference for your doctors? Explain your answer. (2 points)

What are potential pros and cons of having such tests done and referring to DNA sequences when determining a patient's medical treatment? (5 points)

Describe how the availability of this technology might affect the frequency of genetic diseases in individuals and populations. (3 points)

Answers

Answer:

1. It should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits.  There are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but I can't think of an example where the fears didn't turn out to be baseless.

2. Yes. First, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. The pros involve better medical treatment. The cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. Looking at DNA markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. And OK, actually I suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency.

Brainliest pleaseeeee??

Hypothesize a reason as to why vaccinations were successful in immunizing an individual for the smallpox virus?

Answers

Answer:

vaccine make people immune to small pox

How do tides affect the organisms living in intertidal zones?
A.
Only plants live in intertidal zones because the animals float away with the waves and never return.
B.
The mechanical forces of the waves keeps the organisms clean.
C.
The mechanical forces of the waves can dislodge the organisms from their habitat.
D.
No organisms live in intertidal zones due to the tumultuous environment.

Answers

I believe the answer is C.

1. Predict: How do you expect the spread of a foodborne disease to be similar to and different

from the spread of a person-to-person disease?

PLEASE ANSWER

Answers

Answer and Explanation:

The transmission of diseases through food and through people to people, are similar because both are caused by human contact with infectious parasitic agents such as bacteria and viruses. However, it is possible to notice some differences between these two types of transmissions.

Transmission of disease through food occurs when an individual eats contaminated food or drinks contaminated liquid. This contamination occurs due to the lack of hygiene of the handlers and storage problems, which can allow microorganisms, mostly bacteria, to grow in the food. Thus, when the contaminated food is ingested, the microorganisms will release toxins in the stomach that will cause disease. In the case of water, contamination can also happen due to the lack of basic sanitation and the incorrect dumping of garbage and human waste.

Diseases transmitted from person to person can occur in many different ways. One of the best known ways is through the contact of a healthy person with salivary goths or other body fluids of a person with the disease. However, this transmission can also occur through the contact of a healthy individual with the feces of a sick individual and even with physical contact with a sick individual.

Which of these are present in both woody and herbaceous stems? (Select all that apply.)
A. xylem
B. rings
C. seedlings
D. phloem

Answers

Answer:

xylem & phloem are present in both woody and herbaceous stems

Explanation:

Vascular system is present in both, woody and herbaceous stems. Thus, option A, and D are correct.

What are vascular tissues?

In vascular plants, A tissue which is complex in nature, formed by more than one type of cells are called as vascular tissues. Two main types of vascular tissues are:

XylemPhloem

The transportation of water from roots to stem and leaves of the plant is carried out by xylem. Xylem consist of tracheids and vessel elements, which have different characteristics,  but both play significant role in transportation of water and nutrients.  

The soluble organic compounds synthesized during photosynthesis in the plants are transported by another vascular tissue called as phloem, in process called translocation. It consists of sieve elements, parenchymal cells, fibers, and sclereids.

Therefore xylem and phloem are present in both, woody and herbaceous stems.

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what type of joints make up the skull?

Answers

Answer:

The bones of the skull are highly irregular. Most of the bones of the skull are held together by firm, immovable fibrous joints called sutures or synarthroses. These joints allow the developing skull to grow both pre- and postnatally.

Explanation:

Answer:

какву врсту питања

kakvu vrstu pitanja

Explanation:

which of the following events does not occur in spermatogenesis ​

Answers

Answer:

The mitochondria and Golgi apparatus are packaged into the head of the sperm.

Explanation:

Spermatogenesis is the production of male germ cells. Sufficient stimulation with sex hormones, especially testosterone, and a lower temperature, which is achieved by placing the testicles in the scrotum, are required for the correct course of spermatogenesis. Sperm production has three phases: reproductive, growth and maturation. At the beginning of sperm development are spermatogonia, which are male primordial cells. They have a spherical shape and are located at the edges of the seminal canals. Spermatogonia is mitotically divided. On the one hand, in order to preserve their numbers, and on the other hand, their division produces primary spermatocytes, which lie above the layer of spermatogonia. Primary spermatocytes are diploid, but after the first meiotic division, haploid secondary spermatocytes are formed from them. They still have double chromatids, so a second meiotic division soon occurs, the product of which is spermatids. Spermatids are already fully haploid and do not divide further. Spermatids then undergo a process of spermiogenesis, in which the nucleus condenses, forming a flagellum and losing most of the cytoplasm and some organelles. Immature sperm travel through the seed-forming canals to the epididymis, where they are definitively matured. This whole process takes about 72 days.

A solid is that form of matter that possesses the following
characteristics __.
a
Particles vibrate around fixed axes
b Definite shape
C
Definite volume
d All of the above

Answers

Definite volume is doesn’t possess a definite volume so therefore the answer is c

Which of the following statements is true?
Earth's atmosphere helps it maintain a constant temperature.
Condensation is the process by which water changes from a liquid into a gas.
Plants do not perform respiration.
Animals add water to the atmosphere through photosynthesis.

Answers

Earth's atmosphere helps maintain a constant temperature.

Answer:

hello there your answer is A:Earth's atmosphere helps it maintain a constant temperature.

Explanation:

please mark other guy as brainllest.

have a nice day

[o]-[o]

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Which area of the brain is most active when listening

Answers

Answer: Right inferior frontal gyrus was also activated for both reading and listening comprehension. The common areas of activation are shown in white in Figure 1. Listening comprehension showed large clusters of activation in bilateral (posterior and anterior) superior temporal and middle temporal gyri.

Explanation:

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Completa las oraciones con el opuesto.MODELO: Esteban es alto, no es bajo.1. El carro de mi pap es rpido, no es2. La clase de matemticas es difcil, no eses3. Mi pap es delgado, no esson4. La chica es guapa, no esindirecto5. El chico es bueno, no esar / cantarI merenguesiles6. Jugar al ftbol es divertido, no es7. Mi hermana es generosa, no es8. Los estudiantes no son tontos, sonLuis Guerra? Find the volume of the cylinder below: Can someone please help me on this What is the value of f(x) = 4x -9 i just want to make sure im correct so is this correct? A standard coffee mug has a capacity of 16 fluid ounces. If Annie needs to fill 26 mugs with coffee, how many total quarts of coffee does she need? so what i did is i multiplied 16 x 26 = 416 then i divided 32 and 416 and got 13 so Annie filled 13 quarts of coffee. please tell me im correct or not. Which major waterway built in the 1800s gave people along the Great Lakes access to the Atlantic Ocean? Chesapeake Bay Erie Canal Niagara River Welland Canal HELP ME PLEASEE WILL GIVE BRAINLIEST !!!!! What can we do to help the thousands of displaced Jewish people !???? a. Find a value for x that makes -x less than 2x.b. Find a value for x that makes -x greater than 2x. What material would make the most efficient hot pack? Lithium Chloride Sodium Chloride Sodium Hydroxide Potassium Chloride Rusting is a chemical reaction between Iron metal [Fe(s)] and oxygen gas [O2(g)] in a slightly acidic environment. Rusting is actually a multi-step reaction, however it has the net overall reaction of:4Fe+3O2--->2FeO3If 100.0 g of iron metal are converted into rust, how many moles of rust will have formed? (Assume unlimited oxygen gas.)*Hint* You already converted 100.0 g of Fe into moles of Fe in a previous question, start there. You are given the line y=-2x-5, and it then shifted up 2 units. Write your equation of the new line. PLEASE HELP ASAP!!!In PQS, mQ=22, mS=65, and s=176. Identify q rounded to the nearest tenth. How many proton , neutrons , and electrons are there barium ? Which expression is equivalent to-3x(x-4)-2x(x+3) What are the subunits used to make product in dna replication? For each ordered pair, determine whether it is a solution to y=6. Describe the sequence of transformations that maps PQR into P'Q'R' use the drop-down menus to explain your answer Mrs. Nesbitt had 97 books in her classroom library she received a grant to expand her classroom library After spending the money she had 213 books what is the percent increase? A turtle can walk 12 miles in 3 miles. What is the average speed of the turtle? A cylinder has a radius of 15 feet. Its volume is 5,652 cubic feet. What is the height of the cylinder?