students. Today's lecture is on fossil fuels.
So, to begin, what are they and why do we
call them "fossil" fuels? Well,
over the course of millions of years, the
skeletons of prehistoric animals and the
remains of ancient plants decay and change
form. They turn into rock, coal, or oil
that we then extract and use to create energy.
word "fossil" refers to these
dead plants and animals. The problem is
that continued use of these fuels may cause
irreparable environmental damage to the
Earth. What can be done? Firstly, we need
to limit the use of fossil fuels. Secondly,
we need to seek alternative energy sources.
Why is the use of these fuels so risky?
there are many reasons, starting with serious
air pollution caused by car exhaust fumes
and the burning of coal. Some scientists
think using fossil fuels also causes global
warming. Heat-retaining gases enter the
Earth's atmosphere and oceans whenever we
burn fossil fuels. This leads to an increase
in global temperatures.
warmer planet experiences major changes
in weather patterns and natural disasters
like floods, hurricanes, or droughts. Acid
rain is also the result of harmful gases
that build up in the atmosphere due to fossil
fuel emissions. This rain damages and poisons
agricultural crops and enters our drinking
water supply. Another problem with our use
of fossil fuels is oil spills from ocean
spills cause untold damage to marine life.
Sea birds, fish, and mammals often become
covered in oil. This means they lose their
mobility and ability to avoid danger. They
also cannot hunt for food and may die from
starvation as a result. There are also other
factors to consider. Fossil fuels will become
more expensive and dangerous to extract
as our supply lessens.
will have to spend millions on research
to locate reserves. Extraction procedures
become riskier when mines have to go deeper
or oil rigs move further out to sea. It
is clear that we should spend money on research
to find alternative energy sources. Solar
and wind power are examples of such energy