1.   A team of scientists has been studying the effects of acid rain over a twenty-year period.

2.   A team of scientists has been studying the effects of global warming on Antarctica.

3.   He received a research grant to study the effect of pollution on the environment.

4.   In this chapter, we will study the effect of changes in the data on the optimal solution.

5.   The object was to study the effect of small changes in the exposure, illumination etc.

6.   The results raise an interesting problem for people studying other effects of melatonin.

7.   The strongest evidence for such a contribution comes from studying the effects of removal of the primary visual cortex.

8.   We shall be studying the effects of these bacteria in the intestine.

9.   Many toxic effects can be studied at the cellular level.

10.   She is studying the effects of sleep deprivation.