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.
Yellowing of leaves on a tomato plant can be caused by a number of varying factors. Yellow leaves could be the result of under or over watering, lack of sun, nutrient deficiencies in the soil, or it could be caused by a number of different bacterial or fungal infections. Continue Reading.