7. ¿Te gustaría casarte conmigo?
8. No resido en una ciudad que utilice energía nuclear.
9. Sacaría la basura, si me pagaran adecuadamente.
10. ¿Te importaría no contaminar el río, por favor?
11. Haremos lo que sea necesario para proteger la capa de ozono.
12. ¿Qué reservas naturales has visitado primero?
These are the definitive answers (emphasized): 1. Planting more trees significantly reduces erosion. 2. Upon discovering any toxic substance in your home, you need to notify OR will notify the environmental authorities. 3. If I were unemployed, I would tend to the plants and roses in the garden. 4. Should the trip be canceled, I would go home today. 5. If natural resources are depleted here, we will relocate to another city. 6. If there is a less polluted place, I will calmly live with my family. 7. In the event of flooding, no public transport would be operational. 8. If lion hunting is legalized, wildlife would encounter serious issues. 9. If animal extinction persists, the ecosystem will suffer irreversibly. 10. If I have time off, I will travel to an exotic desert. Explanation: It is worth noting that if the conditional clause beginning with "si..." is in the present tense, the consequent verb should be in the future tense, whereas if the conditional clause is in the past tense, the verb of the dependent clause should be in the conditional tense—paralleling English usage.
