Which statement best describes ecological succession?

Step 1: Define the Problem

Identify the key components of the question that need to be addressed: Understanding what ecological succession is and identifying the statement that best describes it.

Step 2: Break Down the Problem

Divide the problem into smaller, manageable parts:

• Understand the concept of ecological succession.
• Identify characteristics and stages of ecological succession.
• Compare these characteristics with the provided statements.

Step 3: Apply Relevant Concepts

Ecological succession is the process by which the structure of a biological community evolves over time. There are two main types:

• Primary Succession: Occurs in lifeless areas where there is no soil, such as after a volcanic eruption.
• Secondary Succession: Occurs in areas where a disturbance has happened but soil remains, such as after a forest fire.

Step 4: Analysis, Verify and Summarize

Analyze each part in detail:

• Primary Succession: Begins with pioneer species like lichens and mosses that can grow on bare rock. Over time, soil forms, and more complex plants can grow.
• Secondary Succession: Starts with existing soil and often faster than primary succession. It involves species that are adapted to disturbed environments.

Verify the characteristics and stages of ecological succession against the provided statements to find the best match.

Final Answer

The statement that best describes ecological succession is: "Ecological succession is the gradual process by which ecosystems change and develop over time, involving species colonization and replacement."