How to make Effective Time Table by AIR 41 #shorts

To make teaching effective in class

Salinization occurs when the irrigation water accumulated in the soil evapo-rates, leaving behind salts and minerals. What are the effects of salinization on the irrigated land? (1) It greatly increases the crop production (2) It makes some soils impermeable (3) It raises the water table (4) It fills the air spaces in the soil with water

The total effect of force when it acts for short interval of time is ___________.

Find the mean from the following table using short cut method. :