व्यक्ति अपने पर्यावरण में निवास करता है । वह अपने पर्यावरण का एक हिस्सा होता है । पर्यावरण में होने वाली विभिन्न प्रकार की गतिविधियों स वह बहुत प्रभावित होता है । इसलिए जरूरी है कि हमारा पर्यावरण साफ़- सुथरा रहे । पर्यावरण में किसी प्रकार का असंतुलन न उत्पन्न हो जाए । दुर्भाग्यवश कर्ड कारणों से वर्तमान समय में हमारे पर्यावरण में असंतुलन आ गया है । जल, वायु, मिट्‌टी, वन जैसे प्राकृतिक तत्व प्रदूषित हो रहे हैं । इसका परिणाम है – जलवायु में परिवर्तन, जैव विविधता के लिए संकट, बाढ़, सूखा और स्वास्थ्य संबंधी अनेकानक समस्याएं । अत: हमें अपनी गतिविधियों को नियंत्रित करना होगा जो पर्यावरण को तरह-तरह से बिगाड़ रहे हैं । हमें अपने चारों ओर की आबोहवा को शुद्ध रखना हागा हमें जल और वायु की शुद्धता बनाए रखने के प्रयास करने होंगे । वनों को नष्ट होने से रोकना होगा तथा वन्य जीवन के संरक्षण के प्रयास करने होंगे । अपने पर्यावरण का सही दशा में बनाए रखना प्रत्येक नागरिक का परम कर्त्तव्य है ।

Jurisdiction is the area over which someone has legal authority. The area can be defined in terms of geographical boundaries or in terms of certain kind of subjects.

A n s w e r:

Jurisdiction is the area over which someone has legal authority. The area can be defined in terms of geographical boundaries or in terms of certain kind of subjects

Black soils are derivatives of trapped lava. These are found mostly across Gujarat, Maharashtra, Karnataka, and Madhya Pradesh on the Deccan plateau and the Malwa Plateau, where there is both moderate rainfall and underlying basaltic rock. This soil is best suitable for growing cotton.

EXERCISE 1
(Solved)

Fill in the blanks with ‘can’ or ‘could’:

1. ……………………. you prepare a cup of tea for me, please?
2. She ……………………. not help to laugh at the joker.
3. We ……………………. execute your plan at once.
4. He said that he ……………………. walk twenty kms at a stretch.
5. A lame person ……………………. not walk.
6. ……………………. you lift this box for me?
7. She ……………………. read without glasses till last year.
8. You …………………….  not see the principal now.
9. He worked hard but …………………….  not pass the examination.
10. She  …………………….   play the piano when she was only eleven.

Answers:
1.could  2. can  3. can 4. could 5. can 6. could 7. could 8. can 9. could 10. could.

EXERCISE 2
(Solved)

Fill in the blanks with May’ or “Might’:

1. The news ……………………. not be true.
2. With a little more effort we ……………………. win this time.
3. The examinations ……………………. be postponed.
4. We ……………………. have gone if they had invited us to dinner.
5. With a little push, he ……………………. have got the job.
6. ……………………. your future be bright!
7. You ……………………. not attend the meeting this evening.
8. He said that it ……………………. not rain.
9. She asked if she ……………………. see the director.
10. The sky is overcast. It …………………….rain at any time.

Answers:
1. may 2. might 3. may, 4. might 5. might 6. may 7. may 8. might 9. might 10. may

EXERCISE 3
(Solved)

Fill in the blanks with ‘can’, ‘could’, ‘may’ or ‘might’ appropriate to the sense given in brackets:

1. He ……………………. do this if he tried.    (possibility)
2. She ……………………. not run as fast as you.    (ability)
3. He ……………………. enter college next year.    (possibility)
4. I knew that I ……………………. borrow his car.    (ability)
5. You ……………………. tell me what he said.    (claim)
6. You ……………………. tell me what he said.    (ability)
7. I ……………………. help him if he asked me to.    (wish)
8. He works hard so that that he ……………………. get good marks.    (purpose)
9. When I was young, I ……………………. write Hindi verse.    (capacity)
10. Had you worked hard, you ……………………. have won a scholarship    (possibility)

Answers:
1. might 2. can 3. may 4. could 5. might 6. could 7. may 8. may 9. could 10. might.

Yes , I would like to become invisible. It can be an exciting idea for most people. Like two facets of a coin, invisibility can have many advantages and disadvantages. For a child, invisibility may mean a licence for all kinds of pranks without getting caught. Like a Hindi movie, invisibility can help you beat all the villains black and blue and get rid of them. Once you become invisible, nobody would notice you. Within no time, the sadness of isolation will take over the excitement of being invisible. You will have no friend. You will tend to behave like the eccentric scientist in this story.

Mrs. Pumphrey was a rich lady who had a small pet dog named Tricki. She was foolishly indulgent and would pamper the dog by giving him chocolates, cakes, juice, eggs and wine. She was ignorant and did not know that the dog needed exercise also.

Let first term of an A.P=a

 common difference of A.P=d

According to the question,

 a+3d=0.......(1)

 25th term =a+24d

from (1)...a=−3d

  =>  −3d+24d

=>  21d.....(2)

 11th term=a+10d

                    =−3d+10d

                    =7d.....(3)

 By (3) and(2)        25th term=3× 11th term   

The steps which  were taken by French Revolutionaries to create a sense of collective identity among the French people were: 
1) The idea of La- Patrie and Le-Citoyen emphasized the notion of a united community enjoying equal rights under a constitution. 
2) New French flag the tricolour was chosen to replace the former royal standard. 
3) The Estate General was elected by the body of an active citizen and renamed the National Assembly. 
4) New Hymns were composed, oaths taken and martyrs commemorated all in the name of the nation.
5) A centralized administrative system was put in place and it formulated uniform laws for all citizen within its territory. 
6) Internal customs duties and dues were abolished and a uniform system of weight and measures were adopted. 
7) Regional dialects were discouraged and French became the common language of the nation. 

Light is a form of energy that produces in us the sensation of sight.

Following are the properties of light:

• Reflection of light: Every light follows the law of reflection which states that the angle of incidence is equal to the angle of reflection.
• Refraction of light: Refraction of light takes places when the light ray changes its velocity it passes from one medium to another. Index of refraction is used as a means to measure how much light refracts.
• Dispersion: Dispersion of light is defined as the process in which the white light separates into different colours based on their wavelength when passed through a glass prism.

Land Use Pattern in India

The usage of land is determined by both physical and human factors.

• Physical factors: It is dependent on nature variants such as topography, climate, soil types
• Human factors: It completely relies on human activities and usage such as population density, technological capability and culture and traditions etc.

Explanation:

• The main utilisation and usage of land is set on two different factors physical and human. Physical factors include topography, climatic conditions depending upon the area, soil types Human factors comprises of population density, technological capability and culture and traditions etc.
• The pattern and follow up of the net sown area varies widely from one state to another.
• It is mostly over 80 per cent of the total area in Punjab and Haryana and very less than 10 per cent in Arunachal Pradesh, Mizoram, Manipur and Andaman Nicobar Islands.
• The total area occupied by forest is 33 per cent which is far lower than the estimated geographical area, which was outlined in the National Forest Policy (1952).
• It was considered mandatory for the maintenance of the ecological balance.
• Apart of this, land is termed as wasteland and land that is put up to other non-agricultural uses.
• Wasteland mainly includes rocky, arid and desert areas and land put to other non-agricultural uses includes settlements, roads, railways, industry etc.
• The repeated usage of land over a long period of time without taking adequate measures to conserve and manage has lead to degradation of land.

Margot was Anne's elder sister. These lines display her humorous and fun-loving nature.
 

This statement shows that Anne was a fun-loving person. She was witty and knew how to present things in a funny way. She narrated this incident with a lot of fun. The use of ‘plunked down’ shows her sense of humour.

Answer:

The value=1

Step-by-step explanation:

∠B=90°

∠A=∠C

Hyp= AC

Other sides= BC, AB

sinA= BC/AC

cosA=AB/AC

sinC= AB/AC

cosC= BC/AC

Using Pythagoras Theorem

AC²=BC²+AB²

sinA cosC+cosA sinC

=BC/AC*BC/AC +AB/AC*BC/AC

=BC²/AC² +AB²/AC²

=AB²+BC/AC²

=AC²/AC²

=1

A web server is software and hardware that uses HTTP (Hypertext Transfer Protocol) and other protocols to respond to client requests made over the World Wide Web. The main job of a web server is to display website content through storing, processing and delivering webpages to users.