Share on Google Plus. An illegal u-turn is when an individual performs a u-turn in an unauthorized zone where a sign is posted. Illegal u-turns are considered traffic violations, and individuals who are found guilty of this violation could end up with serious fines and penalties.
AQUAGUIDE POND MANAGEMENT SERIES What is it? Turnover is the gentle, natural mixing of pond and lake waters.It is caused by changing temperatures in surface watersbrought on by the progression of the seasons. In Missouriâscontinental-temperate climate, most ponds and lakes turn overin both the fall and the spring.
What Caused Toledo's Water Contamination? Massive algal blooms like the one that has turned the waters of Lake Erie florescent green and contaminated the drinking water of Toledo, Ohio, are caused when certain kinds of algae grow in response to changes in chemicals in the water, often from fertilizer components.