Прочитайте абзац. Выпишите из него причастия
(Participle II) в роли определения и как часть глагольного времени.
But at the majority of pulp and paper mills bark is removed. After barking (in
the mechanical process) the grinding stones grind logs in large quantities of
water and reduce the logs to fibrous state. The composition of the mechanical
pulp (groundwood) is practically identical with that of the wood. Groundwood
made from fresh wood is of light yellow colour. One disadvantage of
groundwood pulping is that the grinding of fibers weakens them. The pulp
produced by the mechanical process is inferior to that produced by the chemical
process: it is used in making those kinds of paper where the highest quality is
not demanded and the price is principal consideration.

Прочитайте абзац.

But at the majority of pulp and paper mills bark is removed. After barking (in the mechanical process) the grinding stones grind logs in large quantities of water and reduce the logs to fibrous state. The composition of the echanical pulp (groundwood) is practically identical with that of the wood. Groundwood made from fresh wood is of light yellow colour. One disadvantage of groundwood pulping is that the grinding of fibers weakens them. The pulp produced by the mechanical process is inferior to that produced by the chemical process: it is used in making those kinds of paper where the highest quality is not demanded and the price is principal consideration.

Выпишите из него причастия (Participle II) в роли определения:

made, produced

и как часть глагольного времени:

removed, used, demanded