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.
Nutrient deficiencies sometimes result in yellowed leaves. A nitrogen, magnesium or sulfur deficiency may cause yellowing of leaves on pepper plants. Signs of a nitrogen deficiency begin with yellow leaves at the bottom of the plants, and the yellowing travels upward. New leaves may appear light green or slightly yellowed, and growth typically slows.