Water pollutants

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Across
  1. 2. This type of pollution disrupts natural cycles of aquatic species like migration and reproduction of marine mammals (5 letters)
  2. 3. A very harmful type of pesticide, Rachel Carson helped banning it in the US (abbrev., 3 letters)
  3. 4. This pollutant is toxic to aquatic organisms and bioaccumulate in the food chain, some examples are lead and mercury (5 letters)
  4. 5. Black liquid pollutant that spreads on oceans from tanker accidents (3 letters)
  5. 7. The _______ cities in China are a way for cities to handle urbanization by managing their storm water (6 letters)
Down
  1. 1. Nutrient-rich waste from farms that causes algal blooms (10 letters)
  2. 2. Units to measure turbidity (3 letters)
  3. 6. ___ Water is harmful for aquatic systems because high temperatures lower oxygen levels and harm temperature-sensitive species (3 letters)