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.
1 Make sure the plant doesnât sit in water and that the soil isnât constantly wet.  Soil: Soil compaction, poor drainage, or lack of soil (becoming rootbound) are other causes of leaf yellowing in hibiscus, often because they contribute to water issues. Check the soil pH, and keep it slightly on the acidic side.