The term harvest implies that a resource -- in this case fleece -- has been removed from its source, which in this case is probably an animal that grows fleece.
Shearing
Alpaca Wool comes from the llama-like animal called The Alpaca. There are tons of farms around the world that specialize in the breeding and harvesting of wool of Alpacas. To get the fibers off the animal, the animals is shaved, not killed, and the wool is sold to companies.
went to dance's, farm work ,sewed, spinning thread,harvesting and read
Generally, depending on the animal, sheering the fleece implies catching the animal, subduing it, then running sheers close to the animal's skin in order to separate the fleece from the animal's skin. There are animals where harvesting the fleece means plucking longer fleece hairs from the underbelly or chin area. This is done by hand.
Commercial harvesting involves harvesting food in large quantities for sale to the public.
who invented rainwater harvesting
.........on harvesting the fields before the monsoon
It is harvesting energy to run cities.
the harvesting season is going to be in 2020
by rainwater harvesting
errrhhhmmm harvesting wheat maybe?
water harvesting