Across
- 4. these kill the pest species to reduce it's ability to function
- 5. this is increased by the introduction of biological agents
- 6. biological agents are less _____ than chemical agents
- 8. this uses both chemicals and biological agents
- 9. an example of a natural predator
- 10. biological agents allow crops to lose less _____
Down
- 1. these produce a toxin that kill the pest species
- 2. can be damaged by the use of biological agents
- 3. this is reduced by the use of integrated systems
- 7. these are introduced to the ecosystem to eat pest species