Plants contain chloroplast to help with food production
Answer:
silica
Explanation:
Diatoms are microscopic organisms. they have shell that is made from organic compounds and silica.Diatoms contain silica in their cell walls. This material is used industrially in the production of toothpastes, silver polishes, and swimming pool filters. Silica is used to remove stains and debris.
<span>In the duct system the atop testis where sperm mature from is known as the epididymis</span>
