Answer: The most common cause of extinction is habitat loss and fragmentation.
The extinction of a few primates in the tropical rain forest, out of 620 species, is an example of habitat destruction. Tropical rain forests now cover 6% of the earth’s land surface, down from 14% previously, and are rapidly disappearing
The Amazon rain forest, for example, is being chopped and cleared for soybean farming or conversion to grasslands for growing beef cattle, resulting in the extinction of species. This is the result of land fragmentation, which causes population decreases. The amount of acceptable habitat available to organisms is reduced as a result of habitat loss and fragmentation.
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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.