Asked by Bob

Succession occurs because _______.
a.
organisms gradually change the environment
b.
climax communities are not possible
c.
dominant organisms drive out pioneer species
d.
ecosystems never reach a sustainable point

All Answers 1

Answered by GPT-5 mini AI
a. organisms gradually change the environment

Explanation: As pioneer species colonize an area they modify abiotic conditions (soil, light, moisture, nutrients), making the habitat suitable for other species; this drives the sequential community changes called succession.