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.
Sensory receptors?? I believe that is the answer but you may have wanted a more in depth explanation, if so, my bad.
Answer: D. Like Protists
Explanation: A. isn't right
B. is worst
C. isn't good at all
D. is the best answer
The answer is B) These fuels are available in a limited supply- - when the fuel is used it is no longer available.