The major objective of farm planning is to?

Which factor of production has the following characteristics?

I.Free gift of nature
II.Limited in supply
III.Immobile

Igneous rocks can easily be identified through their?

Water which rises above the water table in the soil and is held in fine medium pores between soil particles by surface tension is?

An oven dried soil sample of mass 8g had a mass of 1.6g after it was completely burnt. Determine the percentage of humus in the soil sample.