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Biology

Biology
The non-biotic pollutant of underground water is

Arsenic
Algae
Bacteria
Viruses

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Biology
Alimentary canal runs from mouth to

Stomach
Large Intestine
Small Intestine
Anus

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Biology
Which of the following organisms fix nitrogen in aquatic ecosystems

Chemoautotrophs
Cyanobacteria
Fungi
Phytoplankton

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Biology
Plants developing in dry conditions are

xerophytes
ithophytes
mesophytes
hydrophytes

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Biology
Systolic and diastolic pressure in a healthy man is

90 mm and 60 mm
201 mm and 110 mm
85 mm and 55 mm
120 mm and 80 mm

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Biology
The ability to fix atmospheric nitrogen is found in the

Some blue-green algae
Cholrella
Some marine red algae
Leaves of some crop plants

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