B7 revision 4.5 / 5 based on 2 ratings ? BiologyGCSEOCR Created by: SaraCreated on: 15-06-13 19:31 10523674189 Across 1. type of pollution when the input of nitrates in an ecosystem is much higher than usual, therefore polluting lakes (14) 4. Connects bones to bones (9) 5. blood vessels close to the skins surface get bigger in diameter (12) 8. Method to treat sprains (4) 9. what outputs from stable ecosystems are balanced by (5) Down 2. injury via excessive exercise (11) 3. type of technology can be added to packaging to make food last longer and to keep out oxygen and moisture (14) 6. type of unsustainable fuel that humans use as an energy source and is running out (6, 5) 7. detects temperature of blood (12) 10. prevents backflow of blood (also found in veins) (6)
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