Plants reacting to light is called phototropism. As plants need light to survive, by growing towards the direction of the light they give themselves the best chance of gettingâ¦ the most light.   Plants can tell the direction of the light because their surface has chemicals that react to light.
By On 11/29/15 at 12:30 PM. Refugees undergo the strictest background checks of any group of people entering the U.S. While some lawmakers have criticized the process for not being strict enough, it can sometimes take longer than two years, and Syrians go through an additional screening. Above, 5-year-old Syrian refugee Leen works on her homework at her new home in Sacramento, California, on November 16.
Once granted asylum or refugee status, the individual generally has a clear path to permanent residence and eventually U.S. citizenship. Difference between Asylum and Refugee Status. The difference between an asylee and refugee depends on where a person applies. People outside of the United States must apply for refugee status. People who have already made it to the United States border or the interior (by legal or illegal entry) can apply for asylum status.