âI think weâve read every single book they have.â Mark chuckled. He still wasnât ready to put the children downâWill was hanging off of one hip, his hand on Markâs shoulder as he stoically looked down at Bridget, and Mabel had nuzzled into the crook of Markâs neck with a contented sigh.
Diatoms are producers within the food chain. A unique feature of diatom cells is that they are enclosed within a cell wall made of silica (hydrated silicon dioxide) called a frustule. These frustules show a wide diversity in form, but are usually almost bilaterally symmetrical, hence the group name.
Diatoms (Greek: dia = through + temnein = to cut: cut through) are a big group of eukaryotic algae. They are one of the most common types of phyto plankton.Most diatoms are unicellular, although some form chains or simple colonies. Diatom cells are encased within a unique cell wall made of silica (SiO 2).These walls, called frustules, take many forms, some quite beautiful and ornate.iatoms (Greek: dia = through + temnein = to cut: cut through) are a big group of eukaryotic algae. They are one of the most common types of phyto plankton.