The road and the canal are ______to each other.

Suddenly the wind __________and the seas grew calm again.

Rapidly the temperature climbed to 5000 C as friction with the atmosphere turned the __________ of the craft into heat.

Try to buy wood that you know has come from a __________ source.

Chemical waste must be __________ of in an environmentally-responsible manner.

The area is plagued by soil ________ and flooding.

Workers at the industry's central research unit wanted to determine how high-voltage ____________ and smoke from power stations affect trees.

The government _________the use of water by proclamation.

The river was __________with waste.

The water _________ at about 1.5 metres per second.

The company _______ a 12% decline in new orders as evidence that overall demand for its products was falling.

The wind ________ delivers 120 watts in a strong breeze.

The hole they _______ pierces 6 km into the earth's crust.

Many congressmen are keen to revive research into __________ energy sources like solar and wind power.