nature

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Across
  1. 5. What can cause hypercapnia?
  2. 6. the place where we spend the most time is
Down
  1. 1. It is caused by the burning of fossil fuels for electricity generation, transport, heating, industry and construction.
  2. 2. It is a fundamental measure to avoid the use of polluting and non-biodegradable waste.
  3. 3. associated with the position of a body, either with respect to its height or its elastic properties
  4. 4. all locomotives that produce wood, chemicals expel black and white smoke. What's happening.