Nucleus. it’s the main part that sorts and tells cells what to do and where to go.
Answer:
I think its chemical energy is not required because passive transport doesn't need energy at all
Soil particles vary greatly in size, and soil scientists classify soil particles into sand, silt, and clay. Starting with the finest, clay particles are smaller than 0.002 mm in diameter. Some clay particles are so small that ordinary microscopes do not show them. Silt particles are from 0.002 to 0.05 mm in diameter.
