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Richard had become bored with collecting butterflies. His mother got him a book on the migration of butterflies. Richard came in contact with Dr. Urquhart through the book. Dr. Urquhart directed him to study the migration pattern of butterflies. When he did not win any prize in the science fair in seventh grade, he again wrote to Dr. Urquhart to guide him. The scientist gave him many suggestions for new experiments. Richard performed these experiments throughout his high school and won many prizes. Later, he worked on why bright spots are found on a monarch pupa, motivated by Dr. Urquhart. It led to the discovery of a new hormone. The discovery of this new hormone further led to an important theory. The theory was about how cells read their DNA. In this way Dr. Urquhart proved to be his true mentor.

राई

why gandhiji start civil disobideon movement class 10 in shot

ARTERIES	VEINS
Functions
Involved in carrying pure, oxygenated blood and nutrient-rich blood.	Involved in carrying impure, deoxygenated blood
Walls
Consists of three distinct layers, which are rigid, thicker and highly muscular.	Consists of three distinct layers, which are thin and collapsible.
Position
Located deep within the body.	Peripherally located closer to the skin.

ARTERIES	VEINS
Functions
Involved in carrying pure, oxygenated blood and nutrient-rich blood.	Involved in carrying impure, deoxygenated blood
Walls
Consists of three distinct layers, which are rigid, thicker and highly muscular.	Consists of three distinct layers, which are thin and collapsible.
Position
Located deep within the body.	Peripherally located closer to the skin.

Arteries	Vein
They carry oxygenated blood (blood that carries a large amount of oxygen) rich in nutrients.	They carry deoxygenated blood (blood that carries a large amount of carbon dioxide) rich in waste materials.
They carry blood from the heart to the different parts of the body.	They carry blood from the different parts of the body to the heart.
They have thick muscular walls and narrower lumen.	They have thinner walls and lumen is not narrow.

Amoeba shows the holozoic nutrition. It means that the Amoeba consumes the whole food through the endocytosis and digests the food inside the cell within the food vacuole. The digestion process can be describes as :

1. Ingestion- Amoeba moves towards the food by making pseudopodia. The pseudopodia surround the food particle and fuse to form the food vacuole, which is then taken inside the cytoplasm. 

2. Digestion- The food vacuole is combined with lysosomes that contain the hydrolytic enzymes. These enzymes perform the breakdown of food particles.

3. Absorption- The digested food is then absorbed directly into the cytoplasm from where it will be distributed to the different organelles.

4. Assimilation- The absorbed food is used for the generation of energy. The excess amount is stored in the form of glycogen and lipids in the cytoplasm.

5. Excretion- The undigested food in the food vacuole is excreted out of the cell as the food vacuole fuses with the cell membrane and perform exocytosis.

food vacuole

Amoeba shows the holozoic nutrition. It means that the Amoeba consumes the whole food through the endocytosis and digests the food inside the cell within the food vacuole. The digestion process can be describes as :

1. Ingestion- Amoeba moves towards the food by making pseudopodia. The pseudopodia surround the food particle and fuse to form the food vacuole, which is then taken inside the cytoplasm. 

2. Digestion- The food vacuole is combined with lysosomes that contain the hydrolytic enzymes. These enzymes perform the breakdown of food particles.

3. Absorption- The digested food is then absorbed directly into the cytoplasm from where it will be distributed to the different organelles.

4. Assimilation- The absorbed food is used for the generation of energy. The excess amount is stored in the form of glycogen and lipids in the cytoplasm.

5. Excretion- The undigested food in the food vacuole is excreted out of the cell as the food vacuole fuses with the cell membrane and perform exocytosis.

Digestion: The food is digested in the food vacuole with the help of enzymes. Absorption: It is then absorbed in the cytoplasm of the Amoeba by diffusion. Assimilation: The absorbed food provides energy and a part of nutrition is used for growth. Egestion: The undigested and the waste food particles are thrown out.

The purpose of blackening the interior of a solar cooker is that the black surface absorbs more heat radiations of incident solar energy (about 98%) as compare to white or other light coloured surface.

To absorb sunlight

Salt was seen by Mahatma Gandhi as a powerful symbol that could unite masses. ... Hereby, Gandhi chose to break the salt law peacefully and show resistance to British rule. This instigated the Civil disobedience movement and the salt march to Dandi.

Gandhi had made certain demands on behalf of the whole of the Indian National Congress to the British Government. When these demands were not fulfilled, the Civil Disobedience Movement was launched in 1930. ... The movement began with Gandhi's march from Sabarmati to the coastal town of Dandi in Gujarat.

Arteries are thick where as veins are thin

STRUCTURE OF ARTERIES AND VEINS Arteries carry blood away from the heart, and veins carry blood toward the heart, but that is not the only difference. Arteries and veins differ in their structure as well. If an artery is compared to a coresponding vein the size of the artery would be smaller, its lumen would be smaller, the wall would be thicker. The inner lining of an artery is typically wrinkled due to the contracted state of the smooth muscle in the artery wall. Veins have a relatively thin layer of smooth muscle in the wall, and often the veins have a misshapen or collapsed look, whereas arteries maintain a tight cylindrical shape.  Veins also have valve flaps to keep the blood from moving backward in the vessel. These valves resemble the semilunar valves of the heart.    Arteries and veins are similar in that the layers which form the walls are similar in composition. The innermost layer is the tunica intima. The tunica intima consists of an epithelial lining of simple squamous cells (endothelium), a basal lamina, and some supporting connective tissue. In arteries there is an internal elastic membrane where the tunica intima layer meets the tunica media layer. The tunica media is comprised mostly of smooth muscle. In large arteries the tunica media has an abundance of elastic fibers in addition to the smooth muscle. In small veins and capillaries the tunica media is absent. The third and outermost layer of a vessel is the tunica adventitia. This layer is made of connective tissues, which, in turn, form a loose attachment to surrounding tissues. The tunica adventitia is relatively thick in larger veins and may contain a considerable amount of elastic fiber.                                     STUDY TOPICS IN SEQUENCE Introduction to the Circulatory System The Human Heart Major Systemic Vessels Arteries and Veins Heart Development Vertebrate Hearts Things To Know List

   View all Refraction is the bending of light when it goes from one medium to another so, when a ray of light passes through a glass prism, refraction of light occurs both, when it enters the prism as well as when it leaves the prism. ... In this case the ray of light is deviated on passing through the prism.

When an acid reacts with a base, the hydrogen ion of acid combines with the hydroxide ion of base and forms water. As these ions combine together and form water; instead of remaining free, thus both neutralize each other. Olr + H+ - H20 Example: ► When sodium hydroxide (a base) reacts with hydrochloric acid, sodium hydroxide breaks into sodium ion and hydroxide ion and hydrochloric acid breaks into hydrogen ion and chloride ion. Hydrogen ion and hydroxide ion combine together and form water, while sodium ion and chloride ion combine together and form sodium chloride. NaOH + HCl - Oir +Na++ H+ + er - NaCl + H20

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The reaction of acids n bases r called neutralization reaction, since acid n bases neutralise each other. EXAMPLE:-NaOH+HCl⟶NaCl+H2O

Money in your pocket cannot buy all the goods and services that you may need to live well.
(i) Money cannot buy us pollution-free environment.
(ii) Money cannot buy us a disease-free life and might not be able to get protection from infectious disease.
(iii) Besides money, people also like to have equal treatment in the society, freedom, dignity and honour in their life, which money cannot buy them.   

Public facilities are those facilities which are not possible for any individual to access at economic cost, so government provide such facilities for public , to raise quality of life of public. There are many facilities that government provide  to the public in their day to day life. But government needs fund to provide these basic facilities. The government collect certain taxes  for this .

Public facilities are the essential facilities for the community at large and are provided by the government.

They are very important for the public like education , health, transportation , water , sanitation , infrastructure.

But some time Government of india has partnered with private companies to provide basic facilities to its citizen. This initiative is called public private partnership model where government help private companies build basic facilities.

The term sustainable development is applied to the development of a country or world, that is to resume and maintained for future generations. For instance, groundwater; it is generally rendered by nature. Accordingly, we must consume groundwater in a manner that it can be said a Rational or careful use of resources. Moreover, the precise and systematic use of groundwater is essential as imprudent use of the naturally provided (groundwater; in the case of groundwater) resources may deplete them. We should not consume and contaminated the groundwater to a degree that it converts unavailable or unusable for our forthcoming generation

17 E, Ravi Dass Road
Kochi XXXXXX
Kerala
2 March 20XX
Writing 87
The Editor
The Times of India
Kochi XXXXXX
Kerala

Dear Sir
Subject: Nuisance caused by loudspeakers in the city during examination days
Through the columns of your esteemed newspaper I would like to draw the attention of the authorities concerned to the nuisance caused by the indiscriminate use of loudspeakers at religious places, wedding processions, market places and jagrans during the examination days. Students are unable to concentrate on the heavy backlog of revision work during these days. The result is that they fare badly in the examinations and this leads to frustration and unhappiness among students. Their parents also suffer due to it. It is high time the authorities concerned take a serious note of this nuisance and initiate remedial measures to check the problem. Use of loudspeakers should be totally banned irrespective of the place where these are used. It is not only a cause of nuisance but also adds to the noise pollution.

Yours faithfully
Prabhu Kumar

The flag or sign of nature

The coat of arms of the soil or rulling family

The stel or stamp of the land or rulling family

The leader of the state

The linked device and slogan can also be used separately

The state colors, frequently derived from the above

No figurative symbols

All these things are of priceless possession for a nation

The images above are showing the difference between European flags and other flags.

Thanks for both of you ?✌?. But I saw the message late ?

Laws of Reflection and Refraction There are three laws which govern Reflection and Refraction. These can be very easily derived from geometry.They are: Angle of Incident Ray with Normal(i) EQUALS Reflected Ray with Normal(r).(i=r) Popularly known as SNELL'S LAW it is n1*sin i=n2*sin e where i is same as above,e is angle of refracted beam with normal. The INCIDENT ray,REFLECTED ray, REFRACTED ray and the NORMAL at the point of incidence all lie in the same plane.The plane is referred as plane of incidence.

The two laws of reflection are:

         (i) the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane.

         (ii) the angle of reflection (<i>r</i>) is always equal to the angle of incidence (<i>i</i>)

                  ∠<i>r</i> = ∠<i>i</i>

Snell’s law of refraction,

                

When an acid reacts with a base, the hydrogen ion of acid combines with the hydroxide ion of base and forms water. As these ions combine together and form water; instead of remaining free, thus both neutralize each other. Olr + H+ - H20 Example: ► When sodium hydroxide (a base) reacts with hydrochloric acid, sodium hydroxide breaks into sodium ion and hydroxide ion and hydrochloric acid breaks into hydrogen ion and chloride ion. Hydrogen ion and hydroxide ion combine together and form water, while sodium ion and chloride ion combine together and form sodium chloride. NaOH + HCl - Oir +Na++ H+ + er - NaCl + H20

When a acid and base react it produce water and salt. This process is called neutralization. In this reaction a neutral solution is formed so, it is named like that. eg: Ant bites and injects formic acid, is cured by calamine which is a base.

A neutralisation reaction is a chemical reaction between an acid and base dissolved in water.

For example.
KOH(aq)+HNO₃(aq)→KNO₃(aq)+H₂O(aq)

It is called neutralisation as both KNO3KNO3 (salt) and H2OH2O that are formed as the products, are of neutral nature.

Which dubs dubqvev

The place of 7 is 1,00,000 I.e., 6@,85,325 & place of 8 is 10,000 I.e., 67,@5,325. The difference is: 1,00,000-10,000=90,000.

The place of 7 is 1,00,000 I.e., 6@,85,325 & place of 8 is 10,000 I.e., 67,@5,325. The difference is: 1,00,000-10,000=90,000. Hope this is your answer ?.

• Ions bound together by electrostatic attraction form ionic crystals. Their arrangement varies depending on the ions’ sizes or the radius ratio (the ratio of the radii of the positive to the negative ion). A simple cubic crystal lattice has ions equally spaced in 3D at 90° angles.
• Stability of ionic solids depends on lattice energy, which is released in the form of heat when two ions are brought together to form a solid. Lattice energy is the sum of all the interactions within the crystal.
• The properties of ionic crystals reflect the strong interactions that exist between the ions. They are very poor conductors of electricity, have strong absorption of infrared radiation, and are easily cleaved. These solids tend to be quite hard and have high melting points.

You are right paru...

Hey Rishabh Type your answer in answer option. Don't type it in question option. If you don't know where to type your answer then see, first you have to press 'answer' option (you will get it below in every questions). Then you will get 'type your answer' option (that too you will get below). Then type your answer & send it. Hope you got it ?.