Question

कौन-सा पारिस्थितिक तंत्र तुलनात्मक रूप से कम स्थायी होता है
Which ecosystem is comparatively less stable?​

Answer 1

Answer:

aquatic ecosystem

Explanation:

aquatic ecosystem is less stable

Answer 2

Answer:

The answer would be D. Patches of Lichens on bare rock.