Economic development depends on several factors: the country’s population size, global situation, cooperation from other countries, economic priorities adopted by the country, etc. There is a significant difference in the rates of economic growth between countries under dictatorship and democracy. So, democracy is preferred as it has several positive outcomes.

• Plants do not have nervous system or muscles to respond to the stimulus.
• Plants show two different types of movement in respond to the stimulus i) one dependent on growth ii) another independent of growth.

Hence, coordinates of point P are (16, 8).

A nerve impulse is transmitted from one neuron to another through junctions called synapses. A synapse is formed by the membranes of a pre-synaptic neuron, which may or may not be separated by a gap called synaptic cleft. There are two types of synapses, namely, electrical synapses and chemical synapses. At a chemical synapse, the membranes of the pre-post synaptic neurons are separated by a fluid-filled space called synaptic cleft. Chemicals called neurotransmitters are involved in the transmission of impulses at these synapses. The axon terminals contain vesicles filled with these neurotransmitters. When an impulse (action potential) arrives at the axon terminal, it stimulates the movement of the synaptic vesicles towards the membrane where they fuse with the plasma membrane and release their neurotransmitters in the synaptic cleft. The releases neurotransmitters bind to their specific receptors, present on the post-synaptic membrane. This binding opens ion channels allowing the entry of ions which can generate a new potential in the postsynaptic neuron.

• Wash your eyes with clean cold water.
• Do not use too bright or too dim light while reading or doing work. Dim light can cause eye strain and headaches. Too bright light can injure the retina.
• Avoid reading in a moving vehicle.
• Never rub your eyes if something gets inside. You should wash your eyes with clean cold water.
• Self-treatment could be dangerous to the eyes. You must consult a doctor in case of any injury to the eyes.
• Good nutrition is very important for both your general and eye health. Good nutrition keeps the eye in good condition.

Select the row above or the column to the right of where the insertion should occur. ...

Choose Home→Cells and click the arrow to the right of the Insert button to open the drop-down list for the Insert button.

From the menu, choose Insert Sheet Rows or Insert Sheet Columns.

Lett the distance represented in the map be ‘x’.

Here distance covered in road and the distance represented  in the map are in direct proportion.

18/1 = 72/x

X× 18 = 72× 1

X= 72/18

X= 4 cm

Hence, the distance covered in the map is 4cm.

Light: Light is a form of energy which helps us in seeing objects. When light falls on an object, some of the light gets reflected. The reflected light comes to our eyes and we are able to see an object.

In astronomy, Kepler’s laws of planetary motion are three scientific laws describing the motion of planets around the sun.

• Kepler first law – The law of orbits: According to Kepler’s first law,” All the planets revolve around the sun in elliptical orbits having the sun at one of the foci”. The point at which the planet is close to the sun is known as perihelion and the point at which the planet is farther from the sun is known as aphelion.
• Kepler’s second law – The law of equal areas::  ” The radius vector drawn from the sun to the planet sweeps out equal areas in equal intervals of time”
  As the orbit is not circular, the planet’s kinetic energy is not constant in its path. It has more kinetic energy near perihelion and less kinetic energy near aphelion implies more speed at perihelion and less speed (v_min) at aphelion. If r is the distance of planet from sun, at perihelion (r_min) and at aphelion (r_max), then,
  r_min + r_max = 2a × (length of major axis of an ellipse) . . . . . . . (1)
• Kepler’s third law – The law of periods: 

  According to Kepler’s law of periods,” The square of the time period of revolution of a planet around the sun in an elliptical orbit is directly proportional to the cube of its semi-major axis”.

  T² ∝ a³

As, 2 kg of sugar contains 9106 crystals.
So, 1 kg of sugar will contain 9106/2 crystals that will be equal to 4553 crystals.

Therefore, in the 5 kg of sugar there will be 5×4553 crystal that will be equal to 22765.

An oxidizing agent (often referred to as an oxidizer or an oxidant) is a chemical species that tends to oxidize other substances, i.e. cause an increase in the oxidation state of the substance by making it lose electrons.

• They are chemical substances whose atoms remove at least one electron from another atom in a chemical reaction.
• An oxidizing agent is a substance that transfers at least one electronegative atom to a chemical species in a chemical reaction.

Common examples of oxidizing agents are listed below

• Halogens (such as chlorine and fluorine)
• Oxygen
• Hydrogen peroxide (H₂O₂)
• Potassium nitrate
• Nitric acid

Industrial capitalism came to villages and cities of modern world so many workers started to work and stay.

Many number of shops also came as a result. In fact, it also increased problem of bad sanitation and overpopulation.

Industrial Revolution have gained wealth across all nature of capitalism aspects across the smaller in scale.

A sentence is a group of words giving a complete thought. A sentence must contain a subject and a verb (although one may be implied).

Until the 1970s, historians used the term ‘industrial revolution’ for the changes that occurred in Britain from the 1780s to the 1820s.
From then, it was challenged, on various grounds. Industrialisation had actually been too gradual to be considered a ‘revolution’. It carried processes that already existed towards new levels. Thus, there was a relatively greater concentration of workers in factories, and a wider use of money. Until well into the nineteenth century, large regions of England remained untouched by factories or mines and therefore the term ‘industrial revolution’ was regarded as inaccurate: England had changed in a regional manner, prominently around the cities of London, Manchester, Birmingham or Newcastle, rather than throughout the country. Could the growth in the cotton or iron industries or in foreign trade from the 1780s to the 1820s be called revolutionary? The impressive growth of cotton textiles, based on new machinery, was in an industry that relied on a non-British raw material, on sales abroad (especially India), on non-metallic machinery, and with few links to other branches of industry. Metallic machinery and steam power was rare until much
later in the nineteenth century. The rapid growth in British imports and exports from the 1780s occurred because of the resumption of
trade with North America that the War of American Independence had interrupted. This growth was recorded as being sharp only because it started from a low point.

Indicators of economic change occurring before and after 1815-20 suggest that sustained industrialisation was to be seen after rather than before these dates. The decades after 1793 had experienced the disruptive effects of the French Revolutionary and Napoleonic Wars. Industrialisation is associated with a growing investment of the country’s wealth in ‘capital formation’, or building infrastructure and installing new machinery, and with raising the levels of efficient use of these facilities, and with raising productivity. Productive investment, in these senses, grew steadily only after 1820, as did levels of productivity. The cotton, iron and engineering industries had accounted for less than half of the industrial output until the 1840s. Technical progress was not limited to these branches, but was visible in other branches too, like agricultural processing and pottery.

Let us assume that T>0^∘C 
Heat lost by water= heat gained by ice to melt+ heat gained by water formed from ice
⇒300×1×(50−T)=150×80+150×1×(T−0) 
⇒T=6.7^∘C
⇒T=6.7^∘C
Hence our assumption that T>0^∘C  

There are three modes of heat transfer.

1. Conduction: Heat conduction is a process in which heat is transferred from the hotter part to the colder part in a body without involving any actual movement of the molecules of the body. Heat transfer takes place from one molecule to another molecule as a result of the vibratory motion of the molecules. Heat transfer through the process of conduction occurs in substances which are in direct contact with each other. It generally takes place in solids.
2. Convection: In this process, heat is transferred in the liquid and gases from a region of higher temperature to a region of lower temperature. Convection heat transfer occurs partly due to the actual movement of molecules or due to the mass transfer. For example. Heating of milk in a pan.
3. Radiation:  It is the process in which heat is transferred from one body to another body without involving the molecules of the medium. Radiation heat transfer does not depend on the medium. For example: In a microwave, the substances are heated directly without any heating medium.