Adaptation & Natural Selection

Adaptation
Organisms have to compete for suitable conditions to survive and reproduce and in undergoing such processes, organisms having traits that adapt to the environment are being naturally selected and pass onto next generation. Thirdly the regarding consequences of adaptation, adaptation enables or enhances the probability of that organism surviving and reproducing. And if the organism lacks
adaptive traits then their survival and reproduction weakens. Therefore, adaptation helps
increasing the population quantity.

Natural Selection
The organisms that have characteristics that let them adapt better to the environment than rest of the same species have better chance of survival and reproduction thereby having more descendants and due to that have chance of prolonging the advantageous genetic composition onto future generations. In this way, the genes of the organisms with advantageous traits are preserved and passed onto
descendants. This is called Natural Selection.