All insects have three main body regions: the head, the thorax, and the abdomen.

A gene is a locus (or region) of DNA which is made up of nucleotides and is the molecular unit of heredity. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits.

Cirrus is a genus of atmospheric cloud generally characterized by thin, wispy strands, giving the type its name from the Latin word cirrus, meaning a ringlet or curling lock of hair.

In biology, kingdom is the second highest taxonomic rank below domain.

Earthquakes, volcanic eruptions and other underwater explosions, landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami.

A worker bee is any female bee that lacks the full reproductive capacity of the colony's queen bee. Workers gather pollen into the pollen baskets on their back legs, to carry back to the hive where it is used as food for the developing brood.

The Moon is in synchronous rotation with Earth, always showing the same face.

Darwin's On the Origin of Species is considered the foundation of evolutionary biology.

Cumulus clouds are often described as "fluffy" or "cotton-like" in appearance. Cumulo means "heap" or "pile" in Latin.

Most DNA molecules consist of two biopolymer strands coiled around each other to form a double helix.