Question

Bio-Indicators of aquatic health are best observed under which conditions?

a) Once every ten years
b) At the surface, every year
c) Once a year at many depths of water
d) Many times a year at many depths

Answer 1

The best conditions for observing bio-indicators of aquatic health involve frequent monitoring at various depths throughout the year.The correct option is d) .

Step-by-step explanation:

Bio-indicators of aquatic health are best observed under conditions that allow comprehensive understanding of the ecosystem.

This involves monitoring at various times and depths to get a complete picture of the aquatic environment’s health. The correct option is d) Many times a year at many depths. Frequencies of observations during different seasons and depths provide insights into the biodiversity, the presence of different species, including microorganisms, plants, and animals, as well as the physical and chemical properties of the water.

Variations throughout the year and at multiple depths capture changes that may be due to natural cycles or human activities.