Climate
Change
 
Climate
change
refers
 
to
long-term
shifts
 
in
temperatures
 
 
and
weather
 
patterns.
 
These
shifts
may
be
natural,
 
such as
through
variations
in
 
the
solar
cycle.
 
But
since
 
the
1800s,
human
activities
have been
 
 
the
main
reason
for
climate
change,
 
 
primarily
due to
burning
fossil
fuels
 
like
coal,
oil
 
and
gas.