Answer: Darwinism is a theory proposed by Charles Darwin.
- Natural selection is the foundation of this philosophy.
- Minor differences lead to evolution.
- Darwinian variations are directed and tiny.
- Evolution is a process that takes time.
Theory of Hugo de Vries
- Mutations are the foundation of this hypothesis.
- Evolution is the result of mutations.
- Mutations are undirected and random.
- Evolution occurs as a result of random mutations.
Question 18. From which microbes cyclosporine A is produced ? Write its role.
.
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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.