Small changes take place in each generation of organisms.

VOA: special.2009.12.01

These changes, however,will not take effect for nine months.

VOA: special.2009.05.22

Or whether you take a very hard line against them to try to force changes coming in from below within the government.

VOA: standard.2009.08.14

When the Food and Drug Administration does issue new limits on salt, the changes on the menu and on grocery food labels will take time to implement.

VOA: standard.2010.04.22

I think if we go ahead, re-look at our plan, and we start making changes where we had issues, I think in 2020 we can take a more constructive way and go ahead then,"

VOA: standard.2009.10.02