Answer:
The smallest particles are Quarks so I'm assuming that's right. But maybe you mean like normal small particles. So maybe clay because it is less than 0.002 mm.
Explanation:
Answer:
Healthy soil
Explanation:
Tropical areas have lots of rain and can help the soil and its minerals for plants compared to the Arctic where soil would freeze
Answer:
The Printing Press
Explanation:
In the 15th century, an invention called the printing press enabled people to share knowledge more quickly and widely. Civilization never looked back. Knowledge is power, as the saying goes, and the invention of the mechanical movable type printing press helped disseminate knowledge wider and faster than ever before.