One of the differences between Cambrian animals and pre-Cambrian animals was the appearance of ___________ such as antennae as Cambrian animals evolved.
Can somebody help me I literally have no clue.
appendages
To find the answer to your question, you can start by researching the key terms "Cambrian animals" and "pre-Cambrian animals." By doing a quick search, you will gather information about the characteristics and evolutionary differences between these two time periods in Earth's history.
In the context of animal evolution, the Cambrian Period marks a significant event known as the Cambrian Explosion. During this time, which occurred approximately 541 million years ago, there was a remarkable diversification of animal life on Earth. Many new body plans and features appeared, including the development of appendages such as antennae.
On the other hand, the pre-Cambrian period refers to the vast span of time before the Cambrian period, extending back to approximately 4.6 billion years ago. It was during this period that life on Earth originated and evolved, but the diversity and complexity of animals were relatively limited compared to the subsequent Cambrian Explosion.
By understanding these differences and the significance of the Cambrian Explosion, you can conclude that the correct answer to the statement would be "appendages" such as antennae. This is because the evolution of appendages, like antennae, was one of the key characteristics exhibited by animals during the Cambrian period.