Which of the following events contributed to the evolution of life on Earth?

• A. The extinction of the dinosaurs due to a meteor impact
• B. The development of multicellularity
• C. The invention of the microscope
• D. The formation of self-replicating molecules such as RNA

Answer: (D)

Verified step by step guidance

1. Understand the concept of evolution: Evolution refers to the process by which organisms change over time through genetic variations and natural selection. Key events in Earth's history have significantly influenced the evolution of life.
2. Analyze the extinction of dinosaurs: The extinction of dinosaurs due to a meteor impact approximately 66 million years ago created ecological opportunities for mammals and other organisms to diversify and evolve. This event is considered a major turning point in the history of life.
3. Examine the development of multicellularity: Multicellularity allowed organisms to become more complex, enabling specialized cells and tissues to perform different functions. This was a critical step in the evolution of plants, animals, and fungi.
4. Explore the formation of self-replicating molecules: The formation of self-replicating molecules, such as RNA, is believed to be one of the earliest steps in the origin of life. RNA molecules can store genetic information and catalyze chemical reactions, making them essential for the development of life.
5. Clarify the role of the microscope: While the invention of the microscope was a significant scientific advancement, it did not directly contribute to the evolution of life on Earth. Instead, it helped humans study and understand biological processes.