Final answer:
The result of the ordinary course of the struggle for existence in biology is natural selection. Natural selection favors individuals with advantageous traits, allowing them to survive and reproduce.
Step-by-step explanation:
In biology, the result of the ordinary course of the struggle for existence is natural selection. Natural selection is the process by which individuals with advantageous traits are more likely to survive and reproduce, passing those traits on to future generations. This concept was first proposed by Charles Darwin and is a key mechanism driving evolution.