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

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

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Environmental Science
During an equinox:

The earth is not tilted toward nor away from the sun
All of these
The days and nights are of equal length except at the poles
At noon the sun is overhead at the equator

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