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2371. The maximum biological magnification of DDT through food web is seen in
A. bacteria
B. algae
C. higher plants
D. man
Explanation:
2372. The element common to all acids is
A. carbon
B. hydrogen
C. oxygen
D. sulphur
Explanation:
2373. Which of the following is usually not an air pollutant ?
A. Hydrocarbons
B. Sulphur dioxide
C. Carbon dioxide
D. Nitrous oxide
Explanation:
2374. Which of the following is a correct food cycle ?
A. Grasshopper, Snake, Vulture, Frog
B. Grasshopper, Frog, Snake, Vulture,
C. Frog, Grasshopper, Snake, Vulture,
D. Frog, Snake, Grasshopper, Vulture
Explanation:
2375. Which of the following is an exception to Cell Theory ?
A. Bacteria
B. Fungi
C. Virus
D. Lichens
Explanation: