AP BIOLOGY

Detailed explanation-1: -So, the ultimate community is the most stable community. Complete answer: The final stable community in an ecological succession is the ‘Climax community’.

Detailed explanation-2: -Climax community can be reached more quickly in secondary succession due to established soil and presence of pioneer species.

Detailed explanation-3: -Changes in community structure and composition over time are induced by environmental disturbances such as volcanoes, earthquakes, storms, fires, and climate change. Communities with a stable structure are said to be at equilibrium. Following a disturbance, the community may or may not return to the equilibrium state.

Detailed explanation-4: -A climax community is one that has reached the stable stage. When extensive and well defined, the climax community is called a biome. Examples are tundra, grassland, desert, and the deciduous, coniferous, and tropical rain forests.