Nutrition, respiration ,growth excretion, homestais, reproduction, movement, and sensitivity
According to Darwin's Theory of Natural Selection, each generation produces more individuals than the ecosystem can sustain. However, not all individuals are identical and phenotypical variation exists.
Due to this variation, some antelopes are better at escaping lions, perhaps due to speed and/or stamina. Thus, the individuals that are slower and thus less fit will be killed and eliminated from the herd. The antelopes with heritable traits that makes them better suited to the environment, will escape and thus, survive and reproduce.
In Darwin's Theory predation is an evolutionary force.
Employment opportunities tend to improve because trade liberalization leads to market expansion, technology sharing and cross-border investment flows. Political cooperation among countries can improve because of stronger economic ties, which can help resolve conflicts peacefully and lead to greater stability.
Fossil records indicate that eukaryotes evolved from prokaryotes somewhere between 1.5 to 2 billion years ago
