Pavlov's dog stopped salivating to the bell when the food was no longer paired with the bell. This is called:
extinction
NASA did not invent the smoke detector.
Cytoplasm. This photo should help explain it!
No.
This is because mutations not only help a species survive in certain conditions, but also allows diversity within a population. For instance, a bug species can develop a mutation to bug spray, allowing it to survive through its prey or killers. Therefore, ultimately benefiting and helping the species.
Hope this helps!