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.
In most countries, and in the United States, families and individuals who meet this criteria may obtain refugee status or asylum. Now, hereâs the difference: refugees must secure their status prior to entering the country of choice, where as asylum seekers seek status upon arrival. A complex differentiation that causes a lot of confusion in the process to get people to safety.