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The sparse plasma (blue) and dust (white) in the tail of comet Hale–Bopp are being
True Friendship
The fact that a mother works outside the home has no negative effect on the well-being of her child ...
The cell wall of a Gram-negative bacterium, E. coli
Midsagittal section indicating locations of true and false pelves
According to the Balmer-Rydberg equation, electromagnetic radiation with wavelength λ = 486.1 ...