Barbula unguiculata, also called as Bird's-claw Beard-moss is a species of moss belonging to the family Pottiaceae. Its color is usually distinctive, a kind of bright yellow-green shared by few simila

In geology, a boulder is a rock fragment with size greater than 25.6 cm in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others