Why do frogs have triangular heads?
Plz help me with this question!!​

Answers

Answer 1

Answer:

Aquatic frogs tend to have long, flat skulls, while digging species often have short skulls with pointed snouts, a shape that also enables them to use their mouths like chopsticks to catch small, scurrying prey such as ants and termites.

Explanation:


Related Questions

Define DNA and explain the role it plays in cells and in sexual and asexual reproduction.

Answers

Answer:

it is aself replicating materialsthat is present in nearly materials for all living organisms as the main constituents of chromosome

I’m sorry but you can’t get me mad confused when you

A scientist has been working for 15 years to develop a new type of plastic material, but she has not yet been successful. Which of the following
best explains why her work is still a success?
a

New ideas often develop from unsuccessful experimentation.

b

The original problem was not solved and can now be abandoned.

с

Most scientists require several decades of experimenting before achieving their goals.

d

The scientist has demonstrated that there are no new plastics for scientists to develop.

Answers

Answer:

a. New ideas often develop from unsuccessful experimentation.

Explanation:

The scientists' work would still be considered a success because new ideas often develop from unsuccessful experimentation. Many of today's famous inventions and celebrities failed at the start of their career. However, because they did not give up on their goal, they eventually succeeded. A few examples of those people are Bill Gates, Albert Einstein, and Michael Jordan.

Here is an influential quote, said by Michael Jordan, that I think accurately supports this topic of discussion:

"I've missed more than 9,000 shots in my career. I've lost almost 300 games. 26 times, I've been trusted to take the game-winning shot and missed. I've failed over and over and over again in my life. And that is why I succeed."

A scientist has been working for 15 years to develop a new type of plastic material but she has not been successful. Her work is still a success because new ideas often develop from unsuccessful experimentation.

What are the principles of scientific research?

There are various principles that need to be followed when scientific research is being carried out. Methods of self-regulation and authority regulation are both extremely important for conducting scientific research.

They both need to be followed as no one is sufficient without another. The basic principle for scientific working which is required to be followed by all scientists is respect for the work, the integrity of the knowledge, honesty about the data and openness about their mistakes.

Scientific principles are required to be followed in every stage of scientific research, right from the formation of a hypothesis to the publishing of results.

Therefore, even if research is not giving any results it is successful new ideas develop from unsuccessful experimentation.

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sustitución de una es estructura que el animal ha perdido​

Answers

Answer:

we'll need a translator to get what you expressing


How do buffers play a role in
homeostasis in living things?

Answers

Answer:

Buffers are commonly used in living organisms to help maintain a relatively stable pH.

In biological systems, chemical buffers prevent sharp and sudden changes in pH.

In biology, homeostasis refers to stable conditions required for the survival of organisms.

The pH is a scale used to determine how acidic/basic water is. The pH range from 0 to 14 ( a pH equal to 7 is neutral).

In human blood normal pH is about 7.35 to 7.45.

A sudden change in this value alters and negatively affects the homeostasis of the body.

The carbonic acid-bicarbonate is the most important chemical buffer which is used for mantaining acid-base balance (homeostasis) in the blood.

The blood pH can change due to respiratory acidosis/alkalosis and metabolic acidosis/alkalosis.

In conclusion, chemical buffers prevent sharp and sudden changes in pH.

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how is chloroplast similar to bacterium??

Answers

Answer:

it i simlr because they are both i the cell

Explanation:

in the cell

Answer:

they are similar in size. duplicate their DNA and other structures and then divide into two identical organelles

Cells that secrete a lot of substances via active transport need a lot of ___in their cytoplasm.
А)endoplasmic reticulum
B)mitochondria
С)golgi apparatus
D)lysosomes
E)chromosomes

Answers

Answer:

The correct answer is lysosomes.

Explanation:

Cells that secrete a lot of substances via active transport need a lot of lysosomes in their cytoplasm.

Hope this helps....

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which of the following is true for a eukaryote?

A. it is one of the first life forms to appear on earth.

B. it doesn't have a nucleus and organelles.

C. it must be a multicellular organism.

D it evolved from prokaryotes

Answers

Answer:

D it evolved from prokaryotes

Explanation:

let me know if you have any questions

Which statement about balancing selection is correct? View Available Hint(s) Hint 1.opened hint What is balancing selection, and how does it differ from other forms of selection? Which statement about balancing selection is correct? When balancing selection occurs, no single phenotype has a distinct advantage over others in terms of fitness. When balancing selection occurs, all phenotypes have equal fitness. When balancing selection occurs, certain phenotypes are favored when they are common but not when they are rare. When balancing selection occurs, phenotype does not matter.

Answers

Answer:

Correct statement: When balancing selection occurs, certain phenotypes are favored when they are common but not when they are rare  

Explanation:

You will find the explanation in the attached file due to technical problems.

what is photosynthesis?​

Answers

Answer:

Photosynthesis is the process by which plants prepare food using water, sunlight, chlorophyll and carbon dioxide

Answer:

It is the process in which green plants use sunlight to make there own food .

Explanation:

I HOPE YOUR DAY GOES GREAT.

Redactar un ensayo reconociendo y valorando nuestra identidad, patrimonio histórico y cultural:

Answers

La respuesta correcta para esta pregunta abierta es la siguiente.

Desafortunadamente no mencionas el país donde vives, para redactar el ensayo tomando en cuenta los valores y cultura de ese país. Sin embargo, te pongo  el ejemplo de mi país. Tu ajusta las ideas al tuyo. Deseo que te sirva.

Uno de los más grandes atributos que tenemos los Mexicanos es nuestra reconocida variedad cultural, lo cual nos da una identidad única en el mundo.

Somo un país con una de las historias más ricas del planeta, ya que somos descendientes de civilizaciones tan antiguas como la Olmeca y la Tolteca, además de los grandes imperios Maya y Azteca, dos grandes culturas de Mesoamérica.

Cada región en los 32 estados del país, es un México diferente. Lo que nos une es esa preciosa bandera tricolor, con nuestro símbolo patrio: un águila devorando una serpiente.

Somos un país donde se encuentran muchos de los sitios arqueológicos más importantes de las civilizaciones antiguas. Por ejemplo, el mundo Maya: Chichen Itza(petrimonio de la Humanidad por parte de la UNESCO), Palenque, Uxmal, Tulum, entre muchos otros. O el sitio arqueológico de Cholula, con la pirámide cuya nase es la más grande del mundo. En Oaxaca está el sitio arequológico de Monte Albán. Y por su puesto, la gran ciudad de los dioses, Teotihuacán, con sus imponentes pirámides del Sol, la Luna, y el Quetzalcoatl.

Nuestra comida es reconocidamundialmente por su sasón, sabor, y variados ingredientes. La Yucateca y sus papatzules o huevos motuleños. ¡Qué decir de la cochinita pibil! La Poblana con su riquísimo mole, cemitas o chalupas. El cabrito en el estado de Nuevo León. En fin, no hay estado en donde no haya una receta propia para cocinar enchiladas, tacos, sopes, tlacoyos, huaraches, tostadas, tlayudas, o tamales.

No cabe duda que los Mexicanos nos sentimos orgullosos de 600 años de historia, luchas, independencia y la solidaridad que nos caracteriza como país.


Find the odd one out on the basis of not having cellular structure.
a) Bacteria
b) Protozoa
c) Virus
d) Fungi

Answers

option C virus

All the prokaryotes have a cell structure that includes nucleus, Golgi apparatus and ribosomes. prokaryotes survive in nature on their own or inside the body of the host. Viruses, on the other hand, lacks cellular structure and only consists of the genetic material which is multiplied by using host cell machinery

The digestive and excretory systems

Answers

THE EXCRETORY SYSTEM

Answer: The attachment shows the nephron which is the functional unit of the kidney.

It does the work of urine formation through 3 distinct processes.

-Ultra filtration( Small molecules are forced out of the selectively permeable membrane of the glomerulus into the Bowman's capsule under regulated pressure.these molecules are from the blood in the glomerulus brought in by the afferent arteriole.

- Selective reabsorption ( Useful molecule and iron such as glucose and sodium are reabsorbed back into the blood as the filtrate flows through the tubule(nephron)

-Tubular Secretion. ( Movement of molecules not filtered by the glomerulus during the initial stage of filtration back into the filtrate through the renal capillaries.

Stella's urine sample shows the presence of large protein (ULTRAFILTRATION)

John's blood test report indicates a high toxin level ( ULTRAFILTRATION AND TUBULAR SECRETION)

Miguel's blood test shows an increase in metabolic waste( ULTRAFILTRATION AND TUBULAR SECRETION)

Janice's urine report shows the presence of vital materials ( SELECTIVE REABSORPTION).

According to the graph, which statement below is true?

A. This enzyme works equally well at all temperatures.

B. This enzyme works best at 10 degrees Celsius.

C. This enzyme works best at 45 degrees Celsius.


D. This enzyme works best at 60 degrees Celsius.​

Answers

The answer is C, because the rate of enzyme activity is at its highest when the temperature is 45°C. I hope this helps!

The rate of enzyme activity is at its highest when the temperature is 45°C. Thus option C is correct.

What are the factors affecting enzyme activity ?

The optimum temperature for most of the enzymes is between 25-35°C and above 50°C leads to destruction of enzymes

The rate also increases with increased enzyme concentration up to the saturation point

Enzymes work at their optimum pH. The rate of enzymatic reaction depend on substrate concentration.

The accumulation of the products decreases the activity of enzymes, as they combine with the active site of enzymes by  forming a loose complex and inhibits the activity of enzymes.

Some chemical substances like co-factors, potassium ion (K⁺), manganese ion (Mn²⁺) can increases the enzyme activity.

water increases the reaction rate. Light increases the reaction rate in some enzymes but harmful radiation like UV rays and X-rays decreases activity.

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which aspect of el nino can give scientists a preview of earth as temperatures rise with global warming?

Answers

Answer:

Its warming of sea surface temperatures

Answer:

its warming of sea surface temperatures

Explanation:

If there is a 1-degree change, coral reefs will become______?

Answers

Answer:

warmer

Explanation:

choose one plant or animal and what are the 3 adaptions this organisms has

Answers

The three basic types of adaptations, based on how the genetic changes are expressed, are structural, physiological and behavioral adaptations. Most organisms have combinations of all these types.

En la raza de ovejas Rommey Marsh, un gen conocido como gris letal, provoca que el feto gris GG, muera antes de las 15 semanas de gestación; El Genotipo heterocigótico Gg produce lana gris y el genotipo homocigótico gg produce lana negra. Si se cruzan individuos heterocigóticos. Cuáles serán las proporciones fenotípicas esperadas en la progenie viva? *

Answers

Answer

1:2:1

Please  check the file,due to technical reasons there was issues  with submission

Explanation:

Compare the characteristics of nitrogen fertilisers that are used for
broadcasting with a phosphate fertiliser that is insoluble in water??

Answers

Answer:

Nitrogen is mobile while phosphorus is immobile in the soil.

Explanation:

Nitrogen fertilizers are those fertilizers which provide nitrogen to the plants that is required by plants for the formation of amino acids. It increases vegetative growth of plant. Nitrogen fertilizer is highly mobile due to soluble in water and contaminated the underground water by leaching while phosphorus fertilizer are those fertilizer which provide second macro-nutrient i. e. phosphorus to the plants. Phosphorus is a vital component of energy molecule such as ATP. It is insoluble in water so it is immobile. Only 20 % of the applied phosphorus fertilizer is available to plants.

Drag each characteristic to the correct location on the phylogenetic tree. Complete the phylogenetic tree by matching each characteristic that arose during the evolution of animals to its correct position.

Answers

Answer:

The correct characteristics are - tissue, coelom, segmentation, endoskeleton, and backbone from top to bottom boxes.

Explanation:

Answer:

issue, coelom, segmentation, endoskeleton, and backbone

Explanation:

plato

¿Cuál es la importancia de la colonización de habitad para la ecología?

Answers

Answer:

i dont speak spanish so ya but thanks for the points

Explanation:

A gamete is best described as what?
A. The protective outer layer of an egg cell.
B. An enzyme in a sperm used to digest the egg cell's membrane.
C. A haploid cell produced for reproduction.
D. A diploid cell produced for reproduction.

Answers

Answer:

C. A haploid cell produced for reproduction.

Explanation:

The term "gamete" refers to reproductive cells such as sperm and ova. Sperm and ova are both haploid cells that unite to form diploid cells.

What is another name of molecular biology????

Answers

Answer:

biotechnology

Explanation:

hope it help you

Answer:

biotechnology biotech

biological engineering biological science

Drag each label to the correct location on the table. Each label can be used more than once.
Identify the voice used in each sentence.
Sentences
Voice
Phil went to a movie with his friends.
The peanut butter is being added
to the cake by the chef.
The blue dress had been put on
display by the store assistant.
Karl gave a touching speech at his
graduation ceremony.
Jacob's party will be attended by
everyone in town
Fred played with a monkey during
his first trip to a zoo
active
passive

Answers

Answer:

1. Phil went to a movie with his friends - active voice

2. The peanut butter is being added

to the cake by the chef - passive voice

3. The blue dress had been put on

display by the store assistant - passive voice

4. Karl gave a touching speech at his

graduation ceremony - active voice

5. Jacob's party will be attended by

everyone in town - passive voice

6. Fred played with a monkey during

his first trip to a zoo - active voice

Explanation:

In English language, the voice of a sentence can either be passive or active.

A sentence is said to be ACTIVE if the subject is performing the action (verb). Hence, the sentence is referring to the subject doing the verb's action directly. For example;

1. Phil went to a movie with his friends

2. Karl gave a touching speech at his

graduation ceremony

3. Fred played with a monkey during

his first trip to a zoo

These are examples of sentences (1,2,3) in active voice because the subjects are performing the actions in the sentence.

On the contrary, a sentence is in the PASSIVE VOICE when the subject is acted upon by the verb in the sentence. In other words, the subject becomes the receiver of the veeb's action. For example;

4. The peanut butter is being added

to the cake by the chef

5. The blue dress had been put on

display by the store assistant

6. Jacob's party will be attended by

everyone in town

The above examples (4,5,6) are all in passive voices because the subjects in the sentences are acted upon by the verbs.

blood flows through many small tubes if the dialyser. what is the significance of this​

Answers

Answer:

Blood flows through smaller tubes to mimic the actual rate of blood flow in the body. This makes the dialysis machne safe for the body. Th dialysis machine can also adjust pressure in accordance of a persons blood pressure

Explanation:

What differences do insects and arachnids have?

Answers

Answer:

The main difference between the two is that arachnids have eight legs (four pairs of legs) while insects have six (three pairs of legs).Another clear difference is that arachnids don't have antennae or wings all insects, though, have antennae, and also have wings

Explanation:

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Antibodies:_______. A. play a large role in cell-mediated immunity. B. are produced by both T and B cells. C. are composed of four light and four heavy polypeptide chains. D. are not specific, but act generally. E. have a variable region that binds to a specific antigenic determinant.

Answers

Answer:

E. have a variable region that binds to a specific antigenic determinant.

Antibodies E. have a variable region that binds to a specific antigenic determinant.

What is the region of the antibody that the antigen binds to?

This location of the antibody is known as the Fab (fragment, antigen binding) place. it's far composed of 1 constant and one variable domain from every heavy and light chain of the antibody. The paratope is shaped on the amino terminal cease of the antibody monomer by the variable domains from the heavy and light chains.

What binds to an antigenic determinant?

An antigenic determinant is a website online of an antigen molecule that is termed an epitope and interacts with the unique antigen-binding site within the variable vicinity of an antibody molecule called a paratope.

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A particular pea plant has one allele for a tall stem (T) and one allele for a short stem (t). By observing it, you can see that it has a tall stem as well as many other different traits. Using this example, explain the difference between phenotype and genotype. Which one can be observed? Which one helps to determine the other?

Answers

Answer:

phenotype is the physical make up of an organism. it is controlled by alleles found in the cells of an organism. dominant alleles overshadow the recessive alleles. the allele for tallness for example, is dominant to that for shortness. since alleles occur in pairs, this plant which is tall can either be genotype TT or Tt , two dominant alleles or one dominant allele and the recessive allele which overpowers the recessive allele hence making the plant appear tall. genotype is the genetic make up of an organism. this determines how an organism appears to look externally.

hence genotype determines phenotype.

At what coordinates is approximately california​

Answers

Answer:

36.7783° N, 119.4179° W

Explanation:

It’s not A it’s wrong dose anyone know the answer

Answers

Answer:

its c i think its ok ok I can u send the

Explanation:

i think

Eye color is an example of 1. Transcriptional control 2. gene expression 3. translational control 4. gene regulation

Answers

Answer: Gene expression

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briefly state and explain 6 major roles of CEO in an organisation Which of the following U.S. policies was an element of the shift towarddtente in American foreign policy during the Cold War?O A. Greatly increasing investment in American education and researchO B. Supporting an anti-Communist invasion of CubaO c. Deploying troops to fight the spread of Communism in KoreaD. Engaging in secret diplomatic negotiations with ChinaSEN Do you know this it is for social studies Which type of writing is best for business letters? Business letters should use_____ writing. 1. descriptive 2. flowery 3. informal 4. precise The government decides to increase its expenditures by $350. The multiplier in this economy is 4 and the tax rate is 22 percent. The net effect of this expansionary fiscal policy is to: Group of answer choices What type of cell is prepared to live on its ownviral cellunicellular celleukaryotic cellmulticellular what is the difference between implied texture and actual or real texture What x value solves the equation? 3x 5 = 1 x = what is the various nation income meature Select the representations that do not change the location of the point (6, 170). a. (-6, 350) b. (-6, 190) c. (-6, -10) d. (6, -190) Find The Answer PLS.. government revenue will increase if taxes are leved on --------- -perfectly elastic demand -unitary elastic demand -perfectly inelastic demand -fairly elastic demand write an Article for youe teacher for sports lesson when x=1,2,3,.... find limit x->infinitychoice a. 0b. 1c. 2d. 3 f. 4help me!!! A three-year annuity-immediate will be issued a year from now with annual payments of 5,000. Using the forward rates, calculate the present value of this annuity a year from now. Simplify the expression. (3x2 4x + 1) + (-x2 + x 9) 128 is the product of hectors score and 8Fastest answer will be the brainliest PLEASE HELP WILL MARK BRAINLY ' i promise i will mark brainliest PLS HELP !!Define two terms, each containing the variables x and y, with exponents on each. (For Example : 10xy)Find the quotient of the two terms. Explain step-by-step how you found the quotient