The Earth's mantle is mainly composed of silicate minerals, which include olivine and pyroxene.

Syngas primarily consists of hydrogen and carbon monoxide, used in various chemical processes.

The main component of the gas used in hydrogen fuel cells is hydrogen.

The main component of urine is water, which makes up about 95% of its volume.

Vinegar primarily consists of acetic acid, which gives it its sour taste.

Water gas is primarily composed of hydrogen (H2) and carbon monoxide (CO).

Wave-particle duality is a fundamental concept of quantum mechanics, indicating that particles exhibit both wave and particle properties.

The research indicates that urbanization significantly disrupts wildlife habitats and populations.

The article concludes that globalization, while presenting challenges, also promotes economic growth and cultural exchange.

The passage concludes that renewable energy faces significant barriers to widespread adoption, which aligns with option B.

Acid rain leads to the corrosion of buildings and monuments, as well as harming aquatic ecosystems.

The main consequence of nuclear fusion is the release of a significant amount of energy as lighter nuclei combine to form heavier nuclei.

Plastic pollution in oceans leads to entanglement and ingestion by marine life, causing injury and death to various species.

Plasma is ionized gas, meaning it has free electrons and ions, while gas does not.

Liquids have a definite volume and take the shape of their container, while gases have neither a definite shape nor volume.

Adsorption is a surface phenomenon, while absorption involves the entire volume of the material.

The main difference is the position of the carbonyl group; aldehydes have it at the end of the carbon chain, while ketones have it within the chain.

Alpha particles have a much greater mass than beta particles, which are electrons or positrons.

The main difference is that classical mechanics is deterministic, while quantum mechanics incorporates probability.

Interference involves the superposition of waves from multiple sources, while diffraction is the spreading of waves when they encounter an obstacle or aperture.

Isotopes of an element differ in the number of neutrons while having the same number of protons.

Nuclear fission involves the splitting of a heavy nucleus into smaller nuclei, while nuclear fusion involves the combining of light nuclei to form a heavier nucleus.

The main difference is that nuclear fusion combines light nuclei to form a heavier nucleus, while nuclear fission splits a heavy nucleus into lighter nuclei.

The main difference lies in the nature of forces involved; physisorption is due to weak van der Waals forces, while chemisorption involves strong chemical bonds.

The main differences between the kingdoms Fungi and Plantae include cell wall composition (chitin in fungi vs cellulose in plants) and mode of nutrition (heterotrophic in fungi vs autotrophic in plants).

The main disadvantage of asexual reproduction is the lack of genetic variation, which can make populations vulnerable to diseases.

Adaptive radiation occurs when a single ancestor species rapidly diversifies into a wide variety of forms to adapt to different environments, driven by environmental changes, genetic mutations, and isolation.

Transpiration pull, created by the evaporation of water from the leaves, is the main driving force for water movement in plants.

Transpiration pull, created by the evaporation of water from the leaf surface, is the main driving force for water movement in the xylem.

Transpiration pull, created by the evaporation of water from the leaves, is the main driving force for water movement in xylem.