a. The world is divided in 25 integer time zones. Show a map. And show how some
borders are somewhat irregular shaped. E.g. take for example the isles in the
Pacific, known as Oceania.
b. Daylight Savings Time or Summer Time - explain the differences - benefits and
dislikes are also great subpoints to incorporate as nice speech ideas.
c. Most common abbreviations explained; CET Central European Time, CUT
Coordinated Universal Time, EST Eastern Standard Time, et cetera:
a. The late 19th century need for a a standard time - e.g. communciation with
international telegraph methods.
b. The Greenwich Meridian (Prime Meridian or Longitude Zero degrees) as universal
starting point - explain why this meridian has been chosen.
c. The time history in our own country - some nice anecdotes to tell.
a. The International Date Line.
b. The giant atom-smasher at the world's largest particle physics laboratory CERN
c. Into the future, in space orbits.
d. Into the past, Albert Einstein's theory.
a. The plant's chlorophylls of the thylakoid absorb sunlight, water, nutrients and
b. Oxygen atoms leaves the plant's cell.
c. Those oxygen atoms form oxygen molecules in the air we breathe.
a. Carbon Fixation. Enzymes catalyze that CO2 melts with the natural and organic
phosphorylated 5-carbon sugar ribulose bisphosphate. A six-carbon is created,
which splits in two 3-phosphoglycerate molecules.
Perhaps you are lost in the biological terms I present here - well, there is a
remedy if you look at more informative speech topics for college purposes :-)
b. Reduction. The sun light is used to convert the 3-phosphoglycerates into
glyceraldehyde 3-phosphates. The 3-carbon carbohydrate produces glucose
c. Regeneration. Some glyceraldehyde 3-phosphate is used to start the cycle
over and over again: