History of Solar System formation and evolution hypotheses - Lunar origins hypotheses. 1  Over the centuries, many scientific hypotheses have been advanced concerning the origin of Earth's Moon.
Regular irrigation keeps grass green. Improper fertilizing, nutrient deficiencies, diseases and insects can all cause yellow grass. No matter the cause, yellow grass detracts from your home's appearance. Identifying and correcting the issue is essential to restoring your lawn's health and appearance any time of year.
Yellow leaves are often caused by soil that is too dry; the reason soil that is too wet can also cause yellow leaves is that overly wet soil promotes root rot, which destroys the roots so they can't bring water to the leaves, so the leaves get yellow, just as they would if the soil were dry. Written Aug 25, 2015.