An increase in factory ........................ will lead to an increase in factory waste. (produce)

Thanks to the internet, ................... among people has become easier. (communicate)

Man's indifference has led to the ............. of many species. (extinct)

The ..................... of new medicines will save people's lives. (develop)

In the .............. of your essay, you can restate why recycling is so important. (conclude)

There is a meeting on elephant ................. next week. (conserve)

We've got a huge .................. of paintings by this artist. (collect)

The zoo announced that there will be a ................ in staff because of financial difficulties. (reduce)

Recycling helps control environmental ............ . (pollute)

The ........................ of new medicines will  save people's lives. (develop)