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

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

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Environmental Science
Thermal belts are:

Warmer hillsides that are less likely to experience freezing conditions
Cold, below-freezing air found at the top of a mountain
Pockets of warm air resting on a valley during the afternoon
Pockets of cold air resting on a valley floor at night

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