Why is the orientation of the portable radio with respect to broadcasting station important?

Why is the leaf an important organ of the plant ?

Why abiotic factors are important?

A magnetic dipole is free to rotate in a uniform magnetic field. For what orientation of the magnet with respect to the field torque is maximum?

A magnetic dipole is free to rotate in a uniform magnetic field. For what orientation of the magnet with respect to the field rate of change of torque with deflection is maximum?

Why is ozone layer important ?

Why is it important to feed the newborn babies on colostrum?