Examlex
Find the number of distinguishable permutations of the group of letters.
Tides
The rise and fall of sea levels caused by the gravitational forces exerted by the Moon, Sun, and rotation of the Earth.
Solar Heating
The process of increasing the temperature of an object, substance, or space using energy directly from the sun.
Sunspot Activity
Phenomena on the Sun's surface that appear as dark spots due to lower temperatures, often associated with magnetic activity.
Greenhouse Gases
Gases in Earth's atmosphere, such as carbon dioxide and methane, that trap heat and contribute to global warming.
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