Answer:
Yes like canine is the genus but German Shepard is the species
If you use chemicals to kill insects, you could risk getting the chemicals in unwanted areas. This could kill plants, animals, and other living things. You could also contaminate water if the chemicals get rinsed/drained into a water source.
Each generation would have to breed with a dominate male singing bird so their off springs will come to be singing
Earth is the only one you can live on