Only things which are poorly known become more complex the longer one works upon them.

However, the species is poorly known and may be rare.

More study needs to be done on this poorly known species for efficient protection.

It is rare in all areas of its range and poorly known.

This species is very poorly known, since so far there have been just a few specimens found.

But it will be significant, since the position is poorly known.

Due to its isolated range, it is very poorly known.

New species are still being discovered throughout the world, and the family is poorly known.

The reasons for low recruitment in recent years are poorly known.

The biology of nearly all the species is poorly known.