Final answer:
Organisms without skillful traits have a lesser survival chance when environmental selective pressures favor different traits. The traits beneficial for survival and reproduction are more likely to be passed down, influencing the population over time. As environments change, so do the traits favored by natural selection.
Step-by-step explanation:
Organisms that do not have skillful traits have a lesser chance at survival compared to others under the condition of natural selection when the environment presents certain selective pressures. For example, if the selective pressure is a scarcity of food, predation, or specific mating preferences, individuals with traits that confer an advantage in dealing with these challenges will likely have a higher rate of survival and reproduction. As the environment changes, the traits that are favored by natural selection can also change, and traits that were once advantageous may become less so. This evolutionary process means that the advantageous traits that help organisms to survive are more likely to be passed on to the next generation, leading to a change in the population over time.
Take the example of plant species that originally grew in moist climates with large leaves that helped capture more sunlight and did not need to conserve water. When the climate changed and became drier, these large leaves became disadvantageous as they required more water. Natural selection then favored plants with smaller leaves that could conserve water better, a shift that demonstrates how natural selection operates under different environmental conditions.