To find out if something really works, all important effects need to be studied.

The social and economic effects of the device also need to be recognized.

Once these processes have been identified, their potential effect on future climate change needs to be taken into account.

But, of course, the effects of magic did not need any explanation.

Still, the environmental effect of wind farm on creatures needs to be taken into account.

The effects of inbreeding in the Australian population may need to be studied.

All the effects of pollutants need to be considered for both short- and long-term exposure.

"The performing arts center's effect on Newark needs to take hold before real change can come," he said.

The effects upon them, and the consequences for the station, will need to be determined.

The effect on regional airports and their surrounding areas needs to be assessed.