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    • Posted by Gs Dekwal 4 years, 7 months ago (11220507)

    CBSE > Class 09 > Science
    • 1 answers

    Ayush Nair 4 years, 7 months ago (11113826)

    By looking at trunk

    1 Thank You

    ANSWER

    • Posted by Prajakta Pardeshi 4 years, 7 months ago (11138198)

    CBSE > Class 09 > Science
    • 0 answers
    ANSWER
    Human beings are in the process of dramatically reshaping the Earth’s ecosystems. As far back as the 19th century, some scientists have noted that the current era is defined mainly by the impact of human activity. Now, there is an emerging consensus among Earth scientists that we have indeed entered a new period of geological time, the Anthropocene epoch. Scientists who study the history of the Earth usually divide geological time according to major changes to the biology and climate of the Earth. For instance, the ancient Cambrian period, some 500 million years ago, is distinguished by a sudden explosion in the diversity of life, including the emergence of the ancestors of many modern species. More recently, the Pleistocene epoch, which ended about ten thousand years ago, is notable for the glaciers that swept over much of the Earth. The new Anthropocene epoch would be distinguished from all earlier times in Earth’s history by the dramatic impacts of human activity on the Earth. Though Earth scientists debate exactly when the Anthropocene began, there is a clear consensus that human changes to the environment are real and extreme. For one, many life forms have become, and are becoming, extinct as a result of human activity. For this reason, some paleontologists argue that the human impacts of the Anthropocene began at the end of the last Ice Age, around ten thousand years ago. The fossil record indicates that around that time, many large animals, like woolly mammoths and giant sloths, went extinct shortly after humans arrived in their ranges. Their sudden disappearance suggests that habitat destruction and overhunting by humans may have contributed to their demise. Indeed, many large animals, like elephants and gorillas, are endangered for those same reasons today. The pace of human-caused extinctions has only increased in the past several hundred years. The growth and spread of human populations, caused by advances in seafaring technology and agriculture, has led to overexploitation of fragile ecosystems, introduction of invasive species, and pollution, causing many extinctions. Scientists have estimated the rate of extinction by studying the fossil record, monitoring existing species, and using statistical models to estimate the number of undiscovered species that have been lost. Estimates vary, but most scientists believe that diverse species are going extinct at hundreds or thousands of times the natural rate. The International Union for the Conservation of Nature, for instance, has found that, of species surveyed on its “Red List,” about a fifth of all mammals and reptiles and nearly a third of amphibians are in danger of extinction.   This ongoing, rapid loss of species has been described as a mass extinction, as severe as the event that wiped out the dinosaurs 65 million years ago. To some ecologists, this steep decline in biodiversity suggests that the Anthropocene epoch began in the 17th and 18th centuries, when the rate of extinction shot up dramatically. Human activity is also altering the climate as a whole. Since the Industrial Revolution of the 18th and 19th centuries, humans have significantly altered the atmosphere by mining and burning fossil fuels such as coal, oil, and natural gas. Some byproducts of the use of these fuels, like carbon dioxide, are greenhouse gases that trap solar energy on Earth. To assess the impact of these greenhouse gases on the Earth, scientists have had to investigate the history of the Earth’s climate. Ice cores, samples of ice layers that have trapped atmospheric chemicals over time, have supplied scientists with millennia of year-by-year information about greenhouse gas concentrations and atmospheric temperature. Evidence from ice cores clearly show that the Industrial Revolution brought about a sudden jump in carbon dioxide in the atmosphere, along with an increase in temperatures. A scientific consensus exists that this ongoing rise in temperatures has resulted in warming of the oceans, rising sea levels, and more frequent extreme weather events. Thus, some climatologists propose that the Anthropocene’s onset occurred with the Industrial Revolution and its effects on Earth’s atmosphere. Whenever the Anthropocene is judged to have begun, its impact is undeniable. Human activity has changed the face of the planet; the global ecosystem has been and is being reshaped, the composition of the atmosphere has been altered, and even weather patterns are changing in response to human activity. The consequences of these changes will affect life on Earth for millions of years to come, leaving a mark of human activity that may well outlive humanity itself. Questions 1. On the basis of your reading of the passage. answer the following questions by choosing the most appropriate option. The main purpose of the passage is to (1x5=5) (a) respond to controversial claims made by rival scientists (b) argue for potential solutions to the problems posed by climate change 05 (c) describe human impacts on the Earth's environment (d) account for recent changes in global biodiversity (i) The author's tone of writing in this passage is that of (a) an uncertain scientist (b) a concerned observer (c) a jaded sceptic (d) a dejected defeatist (i) The purpose of the second paragraph is to (a) provide a broad description of the Earth's history (b) compare the current geological epoch to the Cambrian period (c) describe the origins of the majority of the Earth's biodiversity (d) explain how scientists divide geological time (iu) Based on the passage, the relationship between carbon dioxide and ice cores is that... (a) carbon dioxide is extracted from ice cores to fuel industrial processes. (b) carbon dioxide destroys ice cores, leading to a loss of a source of information (c) ice cores can be studied to track changes in atmospheric carbon dioxide levels (d) ice cores remove carbon dioxide from the atmosphere, reducing its effects on the climate (e) The passage most strongly suggests that (a) the recent increase in the extinction rate occurred as a result of human-caused climate change (b) all extinctions currently taking place result from human activity (c) some life forms are going extinct before being discovered by humans (d) modern extinctions are destroying the biodiversity generated in the Cambrian period II. Answer the following questions as briefly as (7×7=7) possible. () What is the name of the new period of geological time that Earth has entered in the current era? (i) What was the ancient Cambrian period distinguished by? (ii) What was the probable reason for the woolly mammoths and giant sloths becoming extinct? (iv) According to IUCN, what proportion of animals is in danger of extinction? (v) What are ice cores? (vi) What does evidence from ice cores show about the impact of the Industrial Revolution? (u) Find the words in the given passage which convey the meaning similar to significant (para 2) • investigated (para 4). Please answer this question

    • Posted by Jayant Nagpal 3 years, 6 months ago (9019388)

    CBSE > Class 11 > English Core
    • 1 answers

    Neetu Sharma 4 years ago (9565805)

    describe human impacts

    54 Thank You

    ANSWER

    • Posted by Amrit Kaur 4 years, 7 months ago (10899206)

    CBSE > Class 12 > English Elective NCERT
    • 1 answers

    Khushi Kamboj?❤ 4 years, 6 months ago (11141331)

    Ys

    0 Thank You

    ANSWER

    • Posted by Siddhi Raghuwanshi 4 years, 7 months ago (11160339)

    CBSE > Class 09 > Mathematics
    • 2 answers

    Siddhi Raghuwanshi 4 years, 7 months ago (11160339)

    Yes

    1 Thank You

    Srishti Jhajaria 4 years, 7 months ago (11169967)

    Is bar on 1??

    1 Thank You

    ANSWER

    • Posted by Haadil Nithin 4 years, 7 months ago (7587142)

    CBSE > Class 11 > Physics
    • 1 answers

    Anshika Seth 4 years, 7 months ago (9049567)

    Parallax is the displacement or the change in the apparent position of the object when viewed from two different points of view

    1 Thank You

    ANSWER
    http://mycbseguide.com/examin8/

    • Posted by Riddhi Pathak 4 years, 7 months ago (11150743)

    CBSE > Class 07 > Sanskrit
    • 1 answers

    Slok Slok 4 years, 7 months ago (11163424)

    Ruu7

    1 Thank You

    ANSWER

    • Posted by Siddhi Raghuwanshi 4 years, 7 months ago (11160339)

    CBSE > Class 09 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Rishita Bagga 4 years, 7 months ago (4439990)

    CBSE > Class 10 > English Language and Literature
    • 1 answers

    Adbhut Jaiswal 4 years, 7 months ago (10310179)

    Ok

    2 Thank You

    ANSWER

    • Posted by Priyanshu Raj 4 years, 7 months ago (11214829)

    CBSE > Class 07 > Mathematics
    • 1 answers

    Neel Rajput Rajput 4 years, 7 months ago (10368289)

    Ooo I also favourite math

    0 Thank You

    ANSWER

    • Posted by Priya Verma 4 years, 7 months ago (5092484)

    CBSE > Class 10 > हिंदी ए
    • 3 answers

    Roshni Baghel 4 years, 6 months ago (11330642)

    Sanyukt vakya

    3 Thank You

    Satyam Suman 4 years, 7 months ago (11233359)

    Sanyukt vakya

    0 Thank You

    Rut@J@ $Ingh 4 years, 7 months ago (9223606)

    Sanyukt vakya

    0 Thank You

    ANSWER

    • Posted by Dhairya Chandrakar 4 years, 7 months ago (11176291)

    CBSE > Class 09 > Science
    • 1 answers

    Ashish Tiwari 4 years, 7 months ago (10570066)

    Fusion. The phenomenon of change of solid into liquid is termed as fusion. For instance, melting of ice.

    2 Thank You

    ANSWER

    • Posted by Smrutisudha Pani 4 years, 7 months ago (5363793)

    CBSE > Class 07 > Mathematics
    • 2 answers

    Neel Rajput Rajput 4 years, 7 months ago (10368289)

    -20 and 30

    1 Thank You

    M I O 4 years, 7 months ago (6691107)

    (-5)×4= 20 and (-5)×(-6)= 30

    1 Thank You

    ANSWER

    • Posted by Anju Garg 4 years, 7 months ago (6993829)

    CBSE > Class 10 > English Language and Literature
    • 2 answers

    Priyanka K 4 years, 7 months ago (5317902)

    In the beginning, Lencho was very happy and satisfied to recieve the letter the even did not feel shocked to get in reply from God. But when the counted the money and found it less, he became very angry as he thought the post office employees cheated him. He wrote another letter to God, demanding thrity more pesos and asked him to send the rest of the amount through different source.

    0 Thank You

    Shruti Bende 4 years, 7 months ago (11224117)

    Lencho was not at all surprised or shocked after opening the letter wit money, he had a unshaken trust on God and was sure that God will help him. He belived that God will definitely help him so he was not shocked at all and after he found that he just received 70 pesos he was angry and again wrote a letter to God calling the post officers as 'a bunch of crooks'.

    0 Thank You

    ANSWER

    • Posted by Sumit Gond 4 years, 7 months ago (9877974)

    CBSE > Class 11 > Mathematics
    • 2 answers

    Bhaduram Hembra 4 years, 6 months ago (9667543)

    18

    0 Thank You

    Chandana Bc 4 years, 7 months ago (9464547)

    Root -3×-6=root (18)²=18

    4 Thank You

    ANSWER

    • Posted by Jayant Singh Sikarwar 4 years, 7 months ago (9321336)

    CBSE > Class 08 > हिंदी
    • 0 answers
    ANSWER

    • Posted by Satyabhushan Maurya 4 years, 7 months ago (8815238)

    CBSE > Class 10 > English Language and Literature
    • 0 answers
    ANSWER

    • Posted by Rupambika Jena 4 years, 7 months ago (11208963)

    CBSE > Class 07 > Other Subjects
    • 5 answers

    Om Parmar 4 years, 6 months ago (11309210)

    Group of no. Consist of denominator and numerator

    0 Thank You

    Nikita Singh 4 years, 7 months ago (11164632)

    Fraction is a part of a whole . For example : 1/2 represents 1 part out of 2 part in this 1 is a numerator and 2 is a denominator .

    1 Thank You

    Amrutha Pradeep 4 years, 7 months ago (10248220)

    Fraction are are group of numbers with denominator ans numerator.

    1 Thank You

    Subhanita Sen 4 years, 7 months ago (9745578)

    Fraction is a number that have denominator and numerator.

    1 Thank You

    Johan Kurien 4 years, 7 months ago (11089248)

    1/2 This is fraction

    1 Thank You

    ANSWER

    • Posted by Pradeep Nehra 4 years, 7 months ago (11222894)

    CBSE > Class 07 > हिंदी
    • 2 answers

    Priyanshu Tiwari 4 years, 7 months ago (10997114)

    Sir test kab hai

    0 Thank You

    Bhakti Chaurasiya 4 years, 7 months ago (9343734)

    Yes sir when is the test

    0 Thank You

    ANSWER

    • Posted by Junior Engineer And Experimental 4 years, 7 months ago (11045005)

    CBSE > Class 10 > Science
    • 2 answers

    Upendra Singh 4 years, 7 months ago (9539397)

    +1

    0 Thank You

    Naman Chug 4 years, 7 months ago (1482687)

    Answer: +1 Explanation: Formula of cuprous chloride is CuCl . Total charge over this is 0. We know charge on Cl is -1 . So to compensate this Cu has +1 charge. That is its valency.

    0 Thank You

    ANSWER

    • Posted by Anurag Yadav 4 years, 7 months ago (11106225)

    CBSE > Class 07 > Mathematics
    • 1 answers

    Kafi 7A 4 years, 7 months ago (11059458)

    The one bas cost of 5 reepe the cost of 5 bus

    0 Thank You

    ANSWER

    • Posted by Jard J 4 years, 7 months ago (7045450)

    CBSE > Class 11 > Applied Maths
    • 0 answers
    ANSWER

    • Posted by Rubina Devi 4 years, 7 months ago (11223131)

    CBSE > Class 12 > Political Science
    • 0 answers
    ANSWER

    • Posted by Prithvi Dahiya 4 years, 7 months ago (11221319)

    CBSE > Class 07 > Sanskrit
    • 2 answers

    Itz_Uniquegirl 🖤 4 years, 7 months ago (9705347)

    Yahhh

    0 Thank You

    Slok Slok 4 years, 7 months ago (11163424)

    Oyu8

    1 Thank You

    ANSWER

    • Posted by Mufeedha S 4 years, 7 months ago (10671541)

    CBSE > Class 10 > Mathematics
    • 0 answers
    ANSWER

    • Posted by Niharika Das 4 years, 7 months ago (10989790)

    CBSE > Class 10 > Mathematics
    • 1 answers

    Amarjeet Singh 4 years, 7 months ago (11225713)

    Because it has more than one factors

    0 Thank You

    ANSWER

    • Posted by Jeya Jothi 4 years, 7 months ago (11222799)

    CBSE > Class 07 > Mathematics
    • 2 answers

    Mahak Kumari 4 years, 7 months ago (10610156)

    66802

    1 Thank You

    Abhinav Chouksey 4 years, 7 months ago (11223422)

    41,402

    0 Thank You

    ANSWER

    • Posted by Shubham Sharma 4 years, 7 months ago (11222660)

    CBSE > Class 12 > Physical Education
    • 0 answers
    ANSWER

    • Posted by Sunidhi Kumari 4 years, 7 months ago (11165377)

    CBSE > Class 07 > Social Science
    • 3 answers

    Sashwati Lahkar 4 years, 7 months ago (8518536)

    Universal Adult Franchise

    0 Thank You

    Jyotsna Kumari 4 years, 7 months ago (11229515)

    universal francisies

    0 Thank You

    Sivananda Sudhi 4 years, 7 months ago (9826831)

    universal franchise

    0 Thank You

    ANSWER

    • Posted by Pratik Singh 4 years, 7 months ago (11223033)

    CBSE > Class 12 > Chemistry
    • 2 answers

    Black Panther 4 years, 7 months ago (11208670)

    Oxygen cylinder now a days in corona time liquid oxygen is helpful.

    1 Thank You

    Muskan Saini 4 years, 7 months ago (10884944)

    Liquid oxygen has a density of 1.41g cm -3 and a boiling point -182 .

    3 Thank You

    ANSWER

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