A unique feature of diatom cells is that they are enclosed within a cell wall made of silica<span> (hydrated silicon dioxide) called a </span><span>frustule.</span>
Answer: When the carbon dioxide concentration goes up, temperature goes up. When the carbon dioxide concentration goes down, temperature goes down.
Explanation:
I feel the answer is cell membrane .
The cell membrane is a semipermeable protection and covering for the cell.
Please mark me as brainliest, if this helped.
- <em>Estrogen.</em>
- <em>Progesterone.</em>
- <em>Prolactin.</em>
- <em>Testosterone.</em>
<em />
<em>A/N</em><em>: hope this help </em>
The answer is constellation.
