The copying of DNA during reproduction is important because:

• The replication of DNA ensures that each daughter cell formed at the end of cell division, receives equal amount of DNA.
• If DNA won't be copied then the daughter cells won't receive all necessary genes.
• There may be absence of important proteins which are encoded by DNA, if DNA won't be replicated.
• Copying of DNA may result in recombination which will lead to evolution.
• Transfer of genetic material from one generation to other makes the organisms to have similar functions.
• Stability of population is maintained.

Characteristics of Development: 

(i) What may be development for one may not be development for the others. 

(ii) For development, people look at mix goals. 

(iii) Income is the most important component of development, but along with income, people also seek equal treatment, good health, peace and security, etc.

Resistance is directly proportional to area and inversely proportional to length.

Hence if we increase resistance we get increased area and decreased length and vice - versa.

Also Resistivity wont change if the length and area is changed. It remains constant for all values for a given material.

So,

Let the original length be = x 

Let the original area be = y

Resistivity = k ( Constant )

So Resistance = ky / x   -----( Equation 1 )

Now given that length is halved and area is doubled. Then we get,

Length = x / 2

Area = 2y

Resistivity = k ( Constant )

Now Resistance = k * 2y / x / 2

= 2 ky * 2 / x 

= 4 ky / x   -----( Equation 2 )

Now comparing Equation 1 and 2 we get that,

Resistance has become 4 times after modifications.

Hence Resistance will become 4 times in the new condition, if the area is doubled and length is halved.

 The different types of networking  
1. Personal Area Network (PAN)
2. Local Area Network (LAN)
3. Wireless Local Area Network (WLAN)
4. Campus Area Network (CAN)
5. Metropolitan Area Network (MAN)
6. Wide Area Network (WAN)
7. Storage-Area Network (SAN)
8. System-Area Network (also known as SAN)

Advantages of networking :-

•  by the help of networking we are able to talk with our friends which are very far to us.
• the another and the main advantage of networking is that by networking we will able to learn many things and also we can practice
• where the help of networking we can do online shopping .

A network, in computing, is a group of two or more devices that can communicate. In practice, a network is comprised of a number of different computer systems connected by physical and/or wireless connections. ... Regardless of scope, all networks allow computers and/or individuals to share information and resources.

Yarn is an unprocessed product, and thus it has a lower value.it is used as a raw material in textile industries/weaving to produce fabric(cloth), after which it can be sold for a much higher value.if we export yarn in large quantities, the profit gained is low, and the whole process would employ less people, but if the weaving sector is developed, the yarn can be used in indigenous industries, which would employ more people and generate higher profit. thereby, becoming a more favourable option as compared to just exporting it.

FAIR globalisation would create opportunities for all and also ensure that the benefits of globalisation are shared better.

• The government can play a major role in making this possible.
• Its policies must protect the interests not only of the rich and the powerful but of all the people in the country.
• The government can ensure that labour laws are properly implemented and the workers get their rights.
• It can support small producers to improve their performance till the time they become strong enough to compete.
• If necessary, the government can use trade and investment barriers.
• Government can negotiate at the W.T.O. for fairer rules.
• It can also align with other developing countries with similar interests to fight against the domination of developed countries in the W.T.O.

Several top Indian companies have been able to benefit from Globalisation: 

(i) They have invested in newer technology and production methods and raised their production standards. 

(ii) Some have gained from successful collaborations with foreign companies. 

(iii) Globalisation has enabled some large Indian companies to emerge as multinational themselves. 

For example, Tata Motors and Infosys.

Foreign trade integrates markets in different countries:

 1. After the trade, goods travel between countries and goes beyond the domestic market.

2. The choices of good increases for the people and the price of similar goods usually become equal.

3. Producers who produce similar goods start to compete even though there is a huge distance between them.

Normal range of breathing rate per minute in an average adult person at rest is 15–18

This means on an average, an adult human being breathes in and out 15–18 times in a minute.

In the recent years, the Indian Government has taken special steps to attract foreign companies to invest in India:
(i) The government has set up industrial zones called special Economic Zones (SEZs). SEZs provide world class facilities – electricity, water, roads, transport,storage recreational and educational facilities.
(ii) Companies who set up production units in the SEZs do not have to pay taxes for an initial period of five years.
(iii) The government has also allowed flexibility in the labour laws to attract foreign investment. The companies can now lower workers ‘flexibly’ for short period when there is intense pressure of work. This is done to reduce the cost of labour for the companies.

Rapid improvement in technology has been one major factor that has stimulated the globalisation process.

 (i) Technology has made much faster delivery of goods across long distances possible at lower costs.

 (ii) It has enabled to contact one another around the world, to access information instantly, and to communicate from remote areas.

 (iii) Internet has allowed to send instant electronic mail and talk across the world at negligible costs.

CBSE has released the new syllabus of all subjects of class 10 after reducing it by 30%. Here, you can download the subject-wise syllabus. You can also check here the deleted portion of the syllabus and other important resources for CBSE Class 10 Board Exam 2021.

Click on the given link for syllabus:

<a href="http://cbseacademic.nic.in/web_material/Curriculum21/Class_X/402-INFO_TECH_X.pdf" ping="/url?sa=t&source=web&rct=j&url=http://cbseacademic.nic.in/web_material/Curriculum21/Class_X/402-INFO_TECH_X.pdf&ved=2ahUKEwiNppSyt8LsAhXhwTgGHdXtCWwQFjAQegQIChAC" rel="noopener" target="_blank">Class X - CBSE | DEPARTMENT OF SKILL EDUCATION ...</a>

Pure acids in the liquid state are exceedingly poor conductors of electricity. The fact that aqueous solutions of acids conduct electricity is definite evidence of the existence of ions in these solutions. Acids undergo dissociation in aqueous solution to form H+ ions.

When electricity is passed through an aqueous solution of an acid, the H+ ions reach the cathode and each H+ ion picks up one electron from the cathode to form H2 gas. Because of this reaction, an aqueous solution of acid conducts electricity.

HCl(aq) → H⁺(aq) + Cl^–(aq)

Let E be the event of happening of rain

P(E) is given as 0.85

E¯ ⟶ not happening of rain

P(E¯) = 1 – P(E) = 1 – 0.85 = 0.15

∴ P(not happening of rain) = 0.15

HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction for the new academic year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.

Considering the loss of classroom teaching time due to the Covid-19 pandemic and lockdown, CBSE reduced the syllabus of classes 9 to 12 with the help of suggestions from NCERT.

The CBSE syllabus has been rationalized keeping intact the learning outcomes so that the core concepts of students can be retained.

Deleted syllabus of CBSE Class 10 Science

1. Apply the question to yourself

This is the best way to solve blood relation questions. Here you try and relate every statement to yourself. The starting name of the statement could be assumed as your name or you

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2. Break the question into very small parts

When the statement is very long, it can get confusing. So break down every statement in the question into sub statements and solve the question.
 

3. Do not assume the gender

Do not assume the gender of any person in the question just based on the names given in the question.
 

4. Draw clear diagrams as you solve

An easy trick to solve such questions with 100% accuracy is to draw a family try where people of the same generation are placed at the same level and the entire diagram is in the form of a hierarchy.

प्रजापति के पुत्र कुश, कुश के पुत्र कुशनाभ और कुशनाभ के पुत्र राजा गाधि थे। विश्वामित्र जी उन्हीं गाधि के पुत्र थे। विश्वामित्र शब्द विश्व और मित्र से बना है जिसका अर्थ है- सबके साथ मैत्री अथवा प्रेम। एक दिन राजा विश्वामित्र अपनी सेना को लेकर वशिष्ठ ऋषि के आश्रम में गये। विश्वामित्र जी उन्हें प्रणाम करके वहीं बैठ गये। वशिष्ठ जी ने विश्वामित्र जी का यथोचित आदर सत्कार किया और उनसे कुछ दिन आश्रम में ही रह कर आतिथ्य ग्रहण करने का अनुरोध किया। इस पर यह विचार करके कि मेरे साथ विशाल सेना है और सेना सहित मेरा आतिथ्य करने में वशिष्ठ जी को कष्ट होगा, विश्वामित्र जी ने नम्रतापूर्वक अपने जाने की अनुमति माँगी किन्तु वशिष्ठ जी के अत्यधिक अनुरोध करने पर थोड़े दिनों के लिये उनका आतिथ्य स्वीकार कर लिया।विश्वामित्र वैदिक काल के विख्यात ऋषि (योगी) थे। ऋषि विश्वामित्र बड़े ही प्रतापी और तेजस्वी महापुरुष थे। ऋषि धर्म ग्रहण करने के पूर्व वे बड़े पराक्रमी और प्रजावत्सल नरेश थे !