Question # 1

------------ is use for the cleaning of sewage water.

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Bacteria

Virus

Algae

Fungi

Formation of Nitriates and nit5rates from ammonia is called.

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Nitrification

Ammonification

Denitrification

Assimilation

Habitat destruction can result in a loss of:

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Species

Population

Community

Ecosystem

Adaptions found in plants to keep the balance of carbon dioxide and oxygen are:

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photosynthesis

stomata

transpiration

all to these

The process in which inherited material transfer from generation to next generation:

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Reproduction

Respiration

Reduction

Circulation

Bone marrow id found in:

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Compact bone

Spongy bone

Osteocytes

Chondrocytes

This is not a part of the hindbrain.

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Pons

Medulla oblongata

Cerebrum

Cerebellum

Percentage of CO₂ in exhaled are during breathing is:

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16%

4%

79%

0.04%

In the structure of DNA Adenine of one nucleotide pairs with which of the nitrogenous base opposite nucleotide:

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Guanine

Cytosine

Thymine

Uracil

It is an example of primary consumers.

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Cattles

Snake

Lion

Tiger

Human Urinary system consists of.

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Kidneys

Ureter

Urinary bladder

All of these

Every year "World Day" is celebrated on:

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31 May

30 May

31 March

21 March

Which of the following is called voice box?

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Trachea

Larynx

Bronchi

Alveoli

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