- It contains 85-90% of the atmosphere’s mass
- It contains nearly all the water and oxygen of the atmosphere
- It is the zone which exhibits changes in condition of weather
- It is about 350 km thick
Author: Zabeehullah
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- Steel
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- Over production
- Natural selection
- Inheritance for acquired characters
- Competition for survival
- Neptune
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- Troposphere
- Ionosphere
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- Lead
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- Size of the earth in relation to that of moon
- Orbit of moon around earth
- Direction of rotation of earth around sun
- Area of the sun covered by the moon
- Aedes Aegypteis
- Anophilies
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- Lachrymal
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- Thyroid
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- Ostrich
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- Platypus
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- Exosphere
- Ionosphere
- Troposphere
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- Chlorine bleach
- Rocket fuel
- Nail polish remover
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