Question # 1

Organism in ecologicla communits interact with one anothe rin....... major ways.

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Two

three

Four

Five

The word alkaline has been taken form.

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Greek

Latin

Arabic

English

........ are the functional units of the kidneys.

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Renal cortex

Nephrons

Renal medulla

Renal pyramids

Cleaning of ...... by artificial method is called dialysis.

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Water

Urine

Acid

Blood

Herbieldes and pesticides are used to eliminate.

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Crop plants

Crop enemies

Crop products

Major crops

Bases react with acids to form water and........

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Hydrogen ions

Ammonia

Salt

Hydroxide ions

Atomic number of th eelement of fourth position in second period.

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4

5

6

7

Which factor is responsible for ecological imbalance.

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Over hunting

Change in water supply

Migration

All these

Star's distance are measured in

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Kilometeres

Miles

Light years

Nauticalmiles

During interphase.............. in the nucleus are duplicated.

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DNA

Gametes

Cytokinesis

Chromosomes

Speed of light through glass is about.

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300000 km /s

250000 km/s

225000 km /s

200000 km/s

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