200
The earth's __________ is one-fifth oxygen.
Nuclear spills will cause the earth to be contaminated with _________.
The killer was _______ by his thumb print.
The ___________ in the desert was over 40 degrees.
The North Pole is in the ______.
_________________ reorganised the ecconomy.
See things from others _________.
A _________ picture is wider than it is tall.
___________ of new business is vital to an economy.
Penguins moving south as __________ melts.
The __________ effect is the warming of the Earth caused by the atmosphere acting like the glass of a __________.
Much of the art on display was ____________.
The article was _____________.
An echo is caused by the __________ of sound.