The farmer had been using a particular insecticide for a long time. What consequences will it have on
Soil ecosystem?

The farmer had been using a particular insecticide for a long time. What consequences will it have on Insect population.

A farmer had been using a particular insecticide for a long time. What consequences will it have on- a) insect population b) soil ecosystem?

What will happen if mechanized fishing continuous for a long time?

If insect population in an ecosystem is increased, what type of effect does it have in that ecosystem?

(A): Spring balances show wrong readings after they has been used for a long time (R): On using for a long time, spring balances loose its elastic strength

What are the biological properties of soil? What effects does this have on plants?

An object falling through a fluid is observed to have an acceleration given by a=g-bv where g is the gravitational acceleration and b is a constant. After a long time it is observed to fall with a constant velocity. What would be the value of this constant velocity?

A plane electromagentic wave of frequency 25 MHz travels in free space along the x-direction. At a particular point in space and time , E=6.3 hatj V/m . What is B at the point ?

What do farmers do to prepare the soil?