The effects of Helen's death proved physical as well.

The side effects of all this have proved not so benign.

But the side effects of the medicine might easily prove to be worse than the disease.

In fact, the net effect on employment and wages could prove to be negative.

However, side effects proved nicotine to be a poor long-term treatment.

But the special effects were proving both time-consuming and complicated to create.

Given the cost of the procedure, side effects, while relatively minor, may prove a deterrent.

Why would the photoelectric effect prove the particle aspect of light?

The preventative effect of the directive has thus already proven its worth.

The special effects proved too difficult at the time, so he was persuaded to direct Cliffhanger.