El Niño is caused by _______.
a.
ocean currents
b.
the isolation of continents
c.
orography
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D
a.
ocean currents
b.
the isolation of continents
c.
orography
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D