Question

question 4
whats the percentage of living things that existed on earth at some point and have become extinct?
question 5
how does coevolution impact the development of one species?
question 6
whats the rna world theory?

Explanation:

Question 4

Estimates suggest that over 99% of all species that have ever lived on Earth have gone extinct. This is based on paleontological studies and understanding of the fossil - record and the history of life on Earth.

Coevolution impacts a species' development by driving adaptations. When two or more species interact closely (e.g., predator - prey, host - parasite, mutualistic partners), changes in one species can lead to selective pressures on the other, causing both to evolve in response to each other. For example, a prey species may evolve better camouflage, leading the predator to evolve better senses to detect it.

The RNA world theory posits that early in Earth's history, RNA molecules served as both genetic material (capable of self - replication and storing genetic information) and catalysts (ribozymes). This was before the emergence of DNA as the primary genetic material and proteins as the main catalytic molecules.

Answer:

Approximately 99%

Question 5