What Are Two Facts About the Theory of Evolution?


Jane Flores

Evolution is a fascinating topic that has been studied for centuries. The theory of evolution was first introduced by Charles Darwin in his book “On the Origin of Species” published in 1859.

Since then, numerous studies have been conducted to understand and validate this theory. In this article, we will discuss two important facts about the theory of evolution.

Fact 1: Evolution is a Gradual Process

One of the most important facts about the theory of evolution is that it is a gradual process. This means that changes in species occur over long periods of time and not overnight. Natural selection plays a crucial role in this process, where organisms with favorable traits are more likely to survive and pass on their genes to their offspring.


For instance, let’s consider the evolution of giraffes. According to the theory of evolution, giraffes evolved longer necks over generations due to competition for food.

The giraffes with longer necks were able to reach higher branches and consume more leaves, which gave them an advantage over their shorter-necked counterparts. Over time, this led to the survival and reproduction of giraffes with longer necks, resulting in an overall increase in average neck length among giraffes.

Fact 2: Evolution is Supported by Fossil Records

Another important fact about the theory of evolution is that it is supported by fossil records. Fossils are remains or traces of organisms from past geological periods that have been preserved over time. By examining these fossils, scientists can trace back the evolutionary history of various species and understand how they have changed over time.


For example, fossils show that dinosaurs existed millions of years ago and were eventually replaced by mammals as the dominant species on Earth. Fossils also show how various species have evolved over time to adapt to changing environments and conditions.


In conclusion, the theory of evolution is a gradual process that occurs over long periods of time and is supported by fossil records. By understanding these important facts about evolution, we can gain a deeper appreciation for the complexity and diversity of life on Earth.