Question

The rate of filtration of a slow sand filter ranges from

Answer 1

Explanation:

A flow of between 4 – 21 m/h can be expected from a rapid sand filter, which is somewhere between 20 and 50 times faster than the range of slow sand filtration. Flow rates are usually around 0.1 m/h but can increase up to 0.4 m/h.

Answer 2

Explanation:

These activities include loosening the soil, seeding, special watering, moving plants when they grow bigger, and harvesting, among others. The main steps foragricultural practices include preparation of soil, sowing, adding manure and fertilizers, irrigation, harvesting and storage.