How is over-irrigation damaging to soil?
a.
it reduces the amount of organic material in soil.
b.
it results in the accumulation of salt near the soil surface.
c.
it increases the acidity of soil.
d.
it removes water from the water table.

Option B

Explanation:

The main source of salinity in the soil is irrigation that damages the crops in the field. The water that is used for irrigation has salts and minerals in it.

When there is a over irrigation, the extra water gets evaporated due to the sunlight. The left over substance is salt. This increase in the concentration salt in crops leds to destruction of crops.

the answer is tropical areas. the tropical areas obtain more

radiant energy from the sun than they lose to space through terrestrial

radiation, and vice versa for polar areas. earth has an energy remaining in the

tropics and an energy scarcity for the polar areas.

explanation:

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.