Why does succession of communities occur?

• A. Climatic changes lead to reduced water availability.
• B. Most populations have a limited life span and die, making room for others.
• C. Resources in an area are limited.
• D. None of the listed responses is correct.
• E. Each existing community changes the environment.

Answer: (E)

Verified step by step guidance

1. Understand the concept of ecological succession, which is the process by which the structure of a biological community evolves over time.
2. Recognize that each community alters the environment in ways that make it more suitable for other species to inhabit.
3. Consider how these changes can include modifications to the soil, light availability, and nutrient levels, which can facilitate the establishment of new species.
4. Acknowledge that as new species establish themselves, they further change the environment, continuing the cycle of succession.
5. Conclude that succession occurs because each existing community changes the environment, paving the way for subsequent communities.