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His ___________ was massive.
Hens and ducks are ________ fowl.
The factory improved its __________.
Ecology includes the study of how animals relate to their ___________.
______ warming constitutes towards climate change.
Global _______ constitutes towards climate change.
The __________ effect is the warming of the Earth caused by the atmosphere acting like the glass of a __________.
The _____ leaked out of the ground.
The __________ cuts will affect everyone.
He fitted __________ to his house.
_____________ is to do with more than one country.
A __________ will speak at the meeting.
You must follow ________.
_________ helps the world.
_________ resources are things that can be used over and over again, for example; sun, wind.
_________ are things that are useful or valuable to people.
The ______ of this river is in those hills.
______________ is very important.