What are the 2 most abundant elements found in the Earth's crust? A. Iron and nickel
B. Carbon and silicon
C. Oxygen and silicon
D. Carbon and hydrogen

Explanation:

carbon and hydrogen

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Oxygen and silicon are the 2 most abundant elements found in the Earth's crust. hopeit help you.

liquid crystals are matters in a state which have properties between those of conventional liquids and those of solid crystals[1]. liquid crystal is partially ordered and anisotropic. in terms of molecular order, liquid crystal molecules have one-dimensional or two-dimensional long - range order.

the national environmental policy act (nepa) is a united states environmental law that promotes the enhancement of the environment and established the president's council on environmental quality (ceq). the law was enacted on january 1, 1970. to date, more than 100 nations around the world have enacted national environmental policies modeled after nepa.