Straighter

Sit a little straighter.

Source: tatoeba (3222991)

Stand up straighter.

Source: tatoeba (3735614)

For decades, many naturalists have called for re-classification of the African forest elephant. It is smaller than its free-ranging savannah counterpart. Its tusks are longer, thinner, and straighter, with a suggestion of pink to them. Its skull shape is also different. But appearance alone was insufficient to prove they were a different species, as University of Washington conservation biologist Samuel Wasser points out.

Source: tatoeba (12240459)

The research shows that Borneo elephants were separated from other Asian elephants about three-hundred-thousand years ago. Some differences are easy to see. The Borneo elephants are smaller than other elephants. Their ears and tails make up a larger part of their bodies. And their tusks are straighter.

Source: tatoeba (12268331)