Which Listing of Geological Periods Is in the Correct Order,
Which listing of geological periods is in the correct order, from oldest to most recent?
A) Cambrian, Devonian, Permian, Cretaceous
B) Devonian, Cambrian, Permian, Cretaceous
C) Cambrian, Permian, Devonian, Cretaceous
D) Permian, Cambrian, Cretaceous, Devonian
You are the lucky student of a wacky professor who develops a time machine. He asks if you will test it with him. You get in, and there is an immediate glitch-the date readout fails so that when you land, you are not sure what era you are in. Your professor begins to panic, but you see something that tells you are in the Cenozoic era. Which of the following could it be?
A) a rabbit eating a daisy
B) a water lily floating in a pond
C) masses of green ferns with dragonflies hovering above them
D) a bee pollinating a flower
You are the lucky student of a wacko professor who develops a time machine. He asks if you will test it with him. You get in, and there is an immediate glitch-the date readout fails so that when you land, you are not sure what era you are in. As your time machine lands, you see an unusual landscape before you. As you open the door, you realise you cannot breathe. You quickly shut the door, realising you are in the ________.
A) Archaean eon
B) Cambrian period
C) Cenozoic era
D) Mesozoic era
An early consequence of the release of oxygen gas by plant and bacterial photosynthesis was to ________.
A) change the atmosphere from oxidising to reducing
B) make it easier to maintain reduced molecules
C) cause iron in ocean water and terrestrial rocks to rust (oxidise)
D) prevent the formation of an ozone layer