Complex sentence: Most are terrestrial or semi-arboreal, but some burrow in sand or loose soil.For example, the black rat snakes, or "Elaphe obsoleta obsoleta", prefers heavily wood habitats due to its excellent tree climbing ability.
Split into simpler sentences: Most are terrestrial or semi-arboreal, but some burrow in sand or loose soil. In the case of "Elaphe obsoleta", black rat snake prefers heavily wood habitats due to its excellent tree climbing ability.