What is the impact of the battle of Onitsha nigerian civil war on the ecosystem?

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Across
  1. 3. ___ released from the Ogbunigwe polluted the air(fire relases___)
  2. 5. ____ of animals were destroyed due to heavy fire and the explosives between the two sides
  3. 7. the _____ of soil was caused by 5000 Nigerian troops moving to try to capture Onitsha. (hint: means to be degraded)
  4. 8. what Nigerian soldiers did instead of trying to capture the Biafrans, causing deforestation(rhymes with turn)
  5. 9. was used in military vehicles, contaminates soil (used in cars)
  6. 10. Biafran soldiers destroyed the River Niger Bridge causing ____ to settle in the river which affected vegetation and agriculture. (rhymes with free)
Down
  1. 1. the use of explosives and artillery caused ______ to the environment(starts with c)
  2. 2. country that bombed Onitsha, and caused devastation to forests(Vladmir Lenin founded this country)
  3. 4. in the Nigerian Civil War Biafra used Ogbunigwe, a type of _____ that devastated both people and the ecosystem of Onitsha. Hint: a self propelled weapon. (rhymes with whistle)
  4. 6. planes used this to destroy Onitsha, destroy vegetation(rhymes with balm)