[Solved] Evaluate the expression without using a calculator. -\(\sqrt { 0.81 }\) A)4.05 B)0.9 C)0.45 D)0.009 Conservationism: An environmental movement that aims to preserve, protect, and restore the natural environment, often through efforts to conserve natural resources and habitats. Radical Environmentalism: An extreme movement that advocates for drastic changes to protect the environment, often focusing on direct action and confrontation. Light Pollution: Excessive, misdirected, or intrusive artificial light that can have adverse effects on human health, wildlife, and the ability to observe stars. Milky Way: The Milky Way is the galaxy that contains our Solar System, characterized by its milky luminescence, which is a band of light formed from stars that cannot be individually distinguished by the naked eye.