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.
Bare patches are spots where grass refuses to grow. Some causes of brown patches in lawn: 1  Dull mower blade: Dull mower blades rip and tear grass blades instead of cutting them cleanly, this can severely damage the grass and cause it to die.