10.1-10.2 · Water and fertilisersLesson 4 of 12
Substances in natural water
River water carries oxygen, minerals, plastics, sewage, microbes, nitrates and phosphates. Some of these help life.
Locked
Unlock the rest of O Level Chemistry: Metals, Environment and Industry (5070).
- Every lesson, every resource, unlocked instantly.
- Track progress and pick up where you left off.
- Free preview lessons stay readable from the outline.