Did you know? Mass of a full-grown Labrador dog (35 kg) is 4 thousand x Mass of a UK pound coin (2017) (8.75 g)
Estimated population of Red Kangaroo (2011) (11.5 million individuals)
/fact/estimated-population-of-red-kangaroo-2011
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If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
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