Across
- 3. : Environmental pollution is the presence of substances or elements that are harmful to humans and ecosystems (living beings).
- 4. : Natural current of water that flows permanently and ends up in another, in a lake or in the sea.
- 6. : large natural water reservoir in a depression in the land, which collects rainwater, groundwater or one or more rivers.
- 7. : in words mention the day on april we celebrated day's eart
Down
- 1. :little pieces of polimers that we eat in water inconsciously.
- 2. : is necessary for animal and plant life
- 5. :occasion by contamination in water
- 8. :The ocean is a continuous mass of salt water that covers more than 70% of the Earth's surface.