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Environmental Science

Environmental Science
Gas released during photosynthesis is

Oxygen
Methane
Nitrogen
Carbon dioxide

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Environmental Science
Red data book contains data of

all animal species
all plant species
threatened species
economically important species

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Environmental Science
In recycling of mineral elements within an ecosystem, the responsible direct acing organism are called

Primary consumers
Decomposers
Secondary consumers
Producers

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Environmental Science
In a volume of air near the earth's surface, ____ occupies 78 percent and ____ nearly 21 percent.

Hydrogen, helium
Oxygen, hydrogen
Hydrogen, oxygen
Nitrogen, water vapor
Nitrogen, oxygen

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Environmental Science
The main reason(s) for warm summers in northern middle latitudes is that:

The earth is closer to the sun in summer
The days are longer
The sun is higher in the sky and we receive more direct solar radiation
All of these
Only (b) and (c) are correct

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Environmental Science
When both partners are affected negatively the nature of interaction is

competition
predation
commensalism
amensalism

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MORE MCQ ON Environmental Science

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