Answer:
The food we eat - our diet - is made up of different biological molecules which gives us energy and contain chemicals we need to grow and repair ourselves and help our cells function in our body.
Carbohydrates and fats are made up of carbon, hydrogen and oxygen.
Proteins contain carbon, hydrogen, oxygen and nitrogen.
Obsidian is produced when lava cools very quickly. The lava coo ls so quickly that no crystals can form. When people make glass they melt silica rocks like sand and quartz then cool it rapidly by placing it in water. Obsidian is produced in nature in a similar way.
C.
Explanation: Prokaryotic archaea have no nucleus and neither to bacteria. But eukaryotes do have a nucleus.
