14 Environmental Issues

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Across
  1. 4. It is caused by various gases and toxins released by industries and factories and combustion of fossil fuels.
  2. 6. It is majorly caused by industrial waste that deprives soil from essential nutrients.
  3. 9. Genetic modification of food results in increased toxins and diseases as genes from an allergic plant can transfer to target plant. Genetically modified crops can cause serious environmental problems as an engineered gene may prove toxic to wildlife.
  4. 11. Clearing of green cover (forests) and make that land available for residential, industrial or commercial purpose.
  5. 12. The ocean acidity has increased by the last 250 years but by 2100, it may shoot up by 150%. The main impact is on shellfish and plankton.
  6. 13. Form of water precipitation that occurs due to the presence of certain pollutants in the atmosphere. It can be caused due to combustion of fossil fuels or erupting volcanoes or rotting vegetation which release sulfur dioxide and nitrogen oxides into the atmosphere.
  7. 14. Climate changes are the result of human practices like emission of Greenhouse gases. It leads to rising temperatures of the oceans and the earth’s surface causing melting of polar ice caps, rise in sea levels and also flash floods.
Down
  1. 1. It refers to migration of population from high density urban areas to low density rural areas which results in spreading of city over more and more rural land. It results in land degradation, increased traffic, environmental issues and health issues.
  2. 2. The ozone layer is an invisible layer of protection around the planet that protects us from the sun’s harmful rays. Ozone layer is valuable because it prevents harmful UV radiation from reaching the earth. This is one of the most important current environmental problem.
  3. 3. It is caused by oil spill, acid rain, urban runoff.
  4. 5. Industry and motor vehicle exhaust are the number one pollutants. Heavy metals, nitrates and plastic are toxins responsible for it.
  5. 7. Human activity is leading to the extinction of species and habitats. Balance of natural processes like pollination is crucial to the survival of the eco-system.
  6. 8. The over consumption of resources and creation of plastics are creating a global crisis. Developed countries are notorious for producing an excessive amount of garbage and dumping it in the oceans and, less developed countries.
  7. 10. The population of the planet is reaching unsustainable levels as it faces shortage of resources like water, fuel and food.