Final answer:
Some gazelles may have genetic traits that make them faster than others, and over time, natural selection may favor the faster individuals. The rest of the gazelles may have been taken by predators or impacted by environmental factors.
Step-by-step explanation:
In terms of the quicker gazelles, it is important to note that speed is a characteristic that varies among individuals within a population. Some gazelles may have genetic traits that make them faster than others. Over time, natural selection may favor the faster individuals, leading to a population with a higher proportion of fast gazelles. This process is known as selective breeding. However, it is also important to consider that speed alone is not the sole determinant of survival and reproductive success. Other factors such as agility, endurance, and camouflaging abilities also play a role in the survival of gazelles in their natural habitat. In terms of what happened to the rest of the gazelles, there could be several reasons for their absence. They may have been taken by predators, such as lions or cheetahs, which are known to prey on gazelles. Additionally, environmental factors such as drought or habitat loss could have impacted the population of gazelles. Changes in food availability or competition with other species may also have played a role in the decrease in their numbers.