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Let's hope for some good _______.
Global warming constitutes towards _______ change.
Orchids grow in ________ lands.
The scent of roses hung in the ___.
_________ action - the force of the river against the banks can cause air to be trapped in cracks and crevices. The ________ weakens the banks and gradually wears it away.
The ___________ in the desert was over 40 degrees.
A ___________ is used to measure temperature.
The __________ in the 1930s led to much unemployment.
The earth's __________ is one-fifth oxygen.