What we plant in the soil of contemplation we shall reap in the harvest of action.— Meister Eckhart

WB TET · Environment and Ecosystem · Quiz

Environment and Ecosystem — quick quiz

5 real WB TET questions on Environment and Ecosystem. Instant scoring and solutions, no signup — see where you stand in ~3 minutes.

Question 1 of 5

HARD

In an experiment, two identical aquatic ecosystems (tanks with water, plants, fish, and snails) were set up. Tank A was kept sealed with only light entering. Tank B was kept open. After two weeks, the fish in Tank A died while those in Tank B survived. Which explanation best accounts for this observation?