The primary products of the electrolysis of water are hydrogen and oxygen gases.

The thermal decomposition of calcium carbonate (CaCO3) produces calcium oxide (CaO) and carbon dioxide (CO2).

When aluminum reacts with hydrochloric acid, hydrogen gas (H2) is produced along with aluminum chloride (AlCl3).

Reproduction ensures the continuation of a species by producing offspring.

Reproductive health education aims to inform individuals about safe practices, including the prevention of sexually transmitted diseases.

Recombinant DNA technology is used to create vaccines, produce antibiotics, and synthesize hormones like insulin.

Restriction enzymes are proteins that cut DNA at specific sequences, which is essential for cloning and genetic engineering.

Brittleness is primarily due to high atomic bonding energy, which prevents the material from deforming plastically.

Gases are highly compressible due to large intermolecular spaces between particles.

Halogens have high electronegativity due to their high ionization energy, which allows them to attract electrons effectively.

The stability of a nucleus is primarily determined by the ratio of neutrons to protons, which affects the balance of forces within the nucleus.

The presence of d-electrons allows transition metals to exhibit variable oxidation states.

Gases can be compressed more than liquids or solids because they have large intermolecular spaces.

Potassium plays a crucial role in water regulation and osmotic balance in plants, helping to maintain turgor pressure.

Root hairs increase the surface area for water absorption from the soil.

Synovial fluid lubricates the joint, reducing friction and allowing for smooth movement.

The cytoskeleton provides structural support, helps maintain cell shape, and facilitates cell movement.

The spinal cord transmits signals between the brain and the rest of the body, playing a crucial role in reflex actions.

White blood cells are crucial for the immune response, helping to defend the body against infections and foreign invaders.

The small intestine is the primary site for the absorption of nutrients from digested food.

The stomach is the primary site of protein digestion, where pepsin begins the breakdown of proteins.

The primary site of respiration in plant cells is the mitochondria, where ATP is produced through cellular respiration.

Sunlight is the primary source of energy for most ecosystems, as it drives photosynthesis in plants.

Solar energy is the primary source of energy for most ecosystems, driving photosynthesis in plants.

Solar energy is the primary source of energy for photosynthesis, driving the process.

The primary source of energy for the Earth is solar energy, which drives weather, climate, and photosynthesis.

Mutations are the primary source of genetic variation, providing the raw material for evolution.

Industrial processes, especially those involving the burning of fossil fuels, are the primary source of sulfur dioxide emissions.

Metallic solids are primarily held together by metallic bonding, which involves a 'sea of electrons' that are free to move.

Bioremediation is primarily used to clean up environmental pollutants using microorganisms.