Ecological Succession

Question 1

succession

Answer 1

• the series of changes that occur in an ecosystem overtime

Question 2

primary succession

Answer 2

• occurs where there is no soil
• bedrock left by a glacier retreating
• lava covered area
• lichens = a combination of fungi and alga
• breakdown the rock surface into a soil and by decomposition of dead lichens

Question 3

secondary succession

Answer 3

• process by which an ecosystem returns to its original state after a disturbance
• organism start growing in order of size and nutritional needs