World Geography
The percentage of the incident radiation reflected back to space is called

both are similar terms
None of these
planet's albedo
earth's albedo

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World Geography
The term 'flora' in the context of natural vegetation refers to

assemblage of plant species living in association with each other in a given environmental frame
role played by species of animals in the maintenance of ecological balance
plants of a particular region or period, listed by species and considered as a group
a large tract covered by trees and shrubs and its administration for assessing economic benefits

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World Geography
The relative abundance of dissolved salts in seawater in descending order is as follows

chlorine, sodium, magnesium, calcium, potassium, sulphate
sodium, chlorine, magnesium, potassium, sulphate, calcium
chlorine, magnesium, calcium, sodium, potassium, sulphate
chlorine, sodium, sulphate, magnesium, calcium, potassium

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