Rocks and Earth Materials

The lithosphere (Earth's crust and uppermost mantle) is primarily composed of silicate minerals rich in silicon, aluminum, and magnesium. These elements form the backbone of common rocks like granite and basalt, while the asthenosphere (deeper mantle), and core have different dominant compositions.

Asteroids are small rocky/metallic bodies that orbit the Sun, primarily found in the asteroid belt between Mars and Jupiter. Meteors are light phenomena caused by burning space debris, meteorites are asteroids that have reached Earth's surface, and constellations are patterns of stars.

When meteoroids survive atmospheric entry and strike Earth's surface, they are called meteorites. 'Meteors' are the light phenomena created by burning debris in the atmosphere, 'meteoroids' are the space objects before atmospheric entry, and 'asterpods' is not a standard scientific term.

Silicon is the most abundant element in the Earth's crust, making up about 28% of its mass. It's primarily found in silicate minerals which are the main constituents of rocks. While oxygen is the most abundant element overall by mass, silicon dominates the rock and mineral composition specifically.

Sedimentary rocks form from layers of sediment that accumulate and compress, creating ideal conditions for fossil preservation. Organisms get buried in sediment before hardening into rock. Metamorphic rocks undergo intense heat and pressure that destroy fossils, while igneous rocks like granite form from molten material that would burn organic remains.

Granite is an igneous rock formed from cooled magma. Shale and limestone are sedimentary rocks, while marble is a metamorphic rock. Granite is commonly used in construction and monuments due to its durability.

Marble is a metamorphic rock formed when limestone is subjected to high heat and pressure deep underground, causing the calcite in limestone to recrystallize into larger, interlocking crystals.

This option is correct because Phenacite - Be₂SiO₄, Willemite - Zn₂SiO₄ and Zircone - ZrSiO₄ are ortho silicates.

Feldspars, Zeolites and Quartz, all are three dimensional silicates (Tecto silicates).

Pearl is made up of CaCO₃, organic matter and water. 

Volcanic eruptions release materials in all three states of matter. Lava is molten rock (liquid), volcanic bombs and ash are solid particles, and gases like water vapor, carbon dioxide, and sulfur dioxide are released simultaneously.

Iodine is essential for synthesis of thyroid hormones (T3 and T4), which regulate metamorphosis in frogs by controlling tissue remodeling and differentiation. The thyroid gland requires iodine to produce these hormones. Chlorine and fluorine are halogens but are not involved in thyroid hormone synthesis or amphibian metamorphosis.

It is a metamorphic rock which is formed from granite.

Earth is an open system for energy - it continuously receives solar radiation and radiates heat back into space. However, for matter, Earth is essentially a closed system with minimal mass exchange. The question asks specifically about the open system aspect, which is energy flow.