The blastula stage is an early stage where the fertilized egg divides and becomes a cell with many cells.

A cnidocyte is a special cell that organisms such as jellyfish and sea anemones possess.

It was found that he has a cyst in his brain.

In plant cells, there is a large bag called a vacuole.

The chromatophores of a frog play an important role in changing its body color.

It takes twenty minutes to get to my house.

He made a model of a regular tetrahedron.

His body build is like that of a sports player.

He is good at drawing a two-dimensional world.

This regular dodecahedron is a geometric shape with perfect symmetry.