Environmental Science
High biological oxygen demand indicates:

all of these
intense level of microbial pollution
absence of microbial pollution
moderate microbial pollution

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Environmental Science
The Gulf Coast states are more humid in summer than the coastal areas of Southern California mainly because of the:

Higher air temperature in the Gulf States
Lower air temperature in Southern California
Low relative humidity of the air over the Pacific Ocean
Higher water temperature in the Gulf of Mexico

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Environmental Science
Which among the following is related to the word Mesoderm ?

Anatomically advanced animals having all three germ layers
Binomial system of classification
Forms blood and bone (leads to complex internal organs)
No membrane-bound organelles, no peptidoglycan in cell walls, introns

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