Question

in the morning, the water levels in a local marsh rise and cover the clam beds. in the evening the water level decreases, making it easier for local fisherman to collect clams. what type of disruptive event does this describe? random periodic extinctive episodic

Explanation:

Tides are a periodic natural phenomenon. The rise and fall of water levels in the marsh due to tides follow a regular, repeating pattern (daily - high tide in the morning and low tide in the evening), which is characteristic of periodic events.

Answer:

B. Periodic