Like all other reptiles, birds have scales. Also, birds lay eggs like other reptiles.
The condition that distinguishes animals and plants from inorganic matter, including the capacity for growth, reproduction, functional activity, and continual change preceding death.
This is the definition of life.
Tiny vibration particles of matter, such as atoms, held together by intermolecular bonds.
Liquid is able to flow and take the shape of a container. Most liquid resist compression, although others can be compressed.
