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Andhra Pradesh SSC (Class 10) Environmental & Disaster Management — practice questions — page 3

Explore 66 free Environmental & Disaster Management questions in Andhra Pradesh SSC (Class 10) Science. Open each question or exercise to read its content, reference answers and available explanation.

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Environmental & Disaster Management questions and exercises with answers

Showing questions 61–66 of 66.

Increased UV radiation due to ozone depletion can cause:Read the answer and worked solution →Which group of organisms recycles nutrients in an ecosystem?Read the answer and worked solution →Composting kitchen waste at home contributes to:Read the answer and worked solution →The Tyndall effect in air refers to scattering of light by:Read the answer and worked solution →In a food chain "Grass → Deer → Tiger", which trophic level has the LEAST energy available?Read the answer and worked solution →The flow chart "Sun → producer → consumer → decomposer" describes:Read the answer and worked solution →

Worked practice questions

Increased UV radiation due to ozone depletion can cause:

  1. Increase in oxygen levels (option)
  2. Cooling of the Earth
  3. Skin cancers and cataracts in humans
  4. Acid rain
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Correct answer: C. Skin cancers and cataracts in humans

1. UV damages DNA in skin cells, leading to skin cancers. 2. It also damages the lens of the eye, contributing to cataracts. 3. Marine ecosystems also suffer reduced phytoplankton growth. _Source: syllabus Science, Ch 13 "Our Environment", §13.2.1_

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Which group of organisms recycles nutrients in an ecosystem?

  1. Decomposers
  2. Producers
  3. Herbivores
  4. Top carnivores
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Correct answer: A. Decomposers

1. Decomposers (bacteria and fungi) act on dead organisms. 2. They release nutrients back into the soil and atmosphere. 3. Producers re-absorb these nutrients to grow. _Source: syllabus Science, Ch 13 "Our Environment", §13.1_

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Composting kitchen waste at home contributes to:

  1. Producing CFCs
  2. Increasing UV exposure (option)
  3. Raising sea levels
  4. Reducing landfill burden and producing organic manure
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Correct answer: D. Reducing landfill burden and producing organic manure

1. Biodegradable kitchen waste breaks down with the help of microbes and worms. 2. The product is nutrient-rich compost usable as manure. 3. Diverting kitchen waste from landfills reduces methane emissions too. _Source: syllabus Science, Ch 13 "Our Environment", §13.2.2_

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