Supported i’m pretty sure. Not much background to the problem though.
The correct answer is a - silicon dioxide.
Diatoms are single celled algae. They have a silica - based cell wall called a frustule, which gives each diatom a particular shape.
Diatoms exist as separate single cells although some may be found in groups or colonies. The ones found in colonies create very pretty forms: leaf shaped, oval , star and even like a period.
Outer shells of diatoms are quite valuable. They are used in industry in the manufacture of toothpaste to give it grit.
<em>The organelle function in cellular respiration is the;</em>
D) Mitochondrion
<u>The Mitochondria is the main organelle involved in respiration. </u>
O2 (oxygen) is a covalent compound
It is true Have a very nice day
