Provides the crop with protection from insects and parasites
Answer:

Explanation:
Mechanical advantage is given by the ratio of output force by input force.
= Output force = 
= Input force = 
So,

The mechanical advantage of the pulley's is
.
Answer c is correct great job
Answer:
Its in this order: 3 - 4 - 1 - 6 - 5 - 7 - 2 - 8
Explanation:
I learned this a while ago so I would know