Nature & Environment
Studying mammals: A winning design
...becomes clearer if we work out what percentage its weight is of the mother's weight. But to compare 'like with like' we first need to express each measurement in the same units, in this case grams (g). 8.0 kg is equivalent to (8.0 × 1000) grams = 8000 g, so 0.5 g as a percentage of 8000 g is (0.5/8000) × 100%. This calculation comes to a little over 0.006% - compared to...