Environmental Science
The most abundant greenhouse gas in the earth's atmosphere:

Nitrous oxide (N2O)
Chlorofluorocarbons (CFCs)
Methane (CH4)
Water vapour (H2O)
Carbon dioxide (CO2)

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Environmental Science
Which among the following is related to the word Mesoderm ?

Anatomically advanced animals having all three germ layers
Forms blood and bone (leads to complex internal organs)
Binomial system of classification
No membrane-bound organelles, no peptidoglycan in cell walls, introns

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