Answer: (C) Commensalism
Explanation: The intimate relationship of grazing cattle and cattle egrets is a famous example of commensalism. They feed on the blood of cattle and are hence dangerous to them since they can transmit a variety of diseases.
The interaction between cattle egret and grazing cattle is an example of : (A) Mutualism (B) Predation (C) Commensalism (D) None of these
The interaction between cattle egret and grazing cattle is an example of : (A) Mutualism (B) Predation (C) Commensalism (D) None of these
.
)
west of the geographic north. The north tip of the magnetic needle of a dip circle placed in the plane of magnetic meridian points above the horizontal. The horizontal component of the earth’s field is measured to be 
Specify the direction and magnitude of the earth’s field at the location.At a certain location in Africa, a compass points 
and 
carrying currents of 
and 
in the same direction are separated by a distance of 
. Estimate the force on a 
section of wire A.
wire carrying a current of 
is placed inside a solenoid perpendicular to its axis. The magnetic field inside the solenoid is given to be 
. What is the magnetic force on the wire?
and making an angle of 
with the direction of a uniform magnetic field of 
. What is the magnitude of the field 
at a point 
from the wire?
-turns carrying current 
.
is at distance 
from the wire. Find the force acting on the electron if its velocity is directed towards the wire.