Which of the following aquatic plant is effective in preventing the water-pollution caused by industrial waste?
A. Water Hyacinth
B. Elephant Grass
C. Parthenium
D. B and C
Answer: Option A
A. Water Hyacinth
B. Elephant Grass
C. Parthenium
D. B and C
Answer: Option A
World Environmental day is celebrated on ________ every year.
A. 01-05-2001
B. 05-06-2005
C. 01-10-2024
D. 01-12-2025
A. Abiotic component
B. Biotic component
C. Oxygen and Nitrogen
D. Abiotic and Biotic component
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