Answer:
The population as a whole is better adapted to the environment.
Step-by-step explanation:
A population's members can be affected via the mechanism of natural selection. It happens when certain features or population differences provide some people a survival and procreation edge. Since these people are more likely to pass on their favorable qualities to their progeny, the population's proportion of people with these features rises over time. The population as a whole improves its environmental adaptation as a consequence.
It's important to note that genetic similarity within a population grows due to other processes other than natural selection, such as founder effect, inbreeding, or genetic drift. Furthermore, while the population's reproduction rate may decline, this is not necessarily due to natural selection. Likewise, adverse environmental changes that occur more frequently are not always caused by natural selection.