Converts sunlight into chemical energy Explanation: Chloroplasts are responsible for converting sunlight into chemical energy through the process of photosynthesis. They contain a pigment called chlorophyll, which captures light energy and uses it to convert carbon dioxide and water into glucose and oxygen.

Biomass Explanation: Biomass is a renewable source of energy derived from organic matter, such as plants, wood, agricultural waste, or dedicated energy crops. It can be burned directly or converted into other forms of energy, such as biofuels or biogas.

Protection of internal organs Explanation: The main function of the skeletal system in the human body is to provide support, structure, and protection to the internal organs. The bones of the skeleton act as a framework and protect vital organs like the brain, heart, and lungs.

The correct answer is  Photosynthesis. Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy stored in glucose. This process takes place in the chloroplasts of plant cells and involves the capture of light energy, the synthesis of glucose, and the release of oxygen as a byproduct.

Wave-particle duality Explanation: Wave-particle duality is the phenomenon where light and other particles, such as electrons, exhibit both wave-like and particle-like properties. It means that they can behave as waves with characteristics like diffraction and interference, as well as particles with characteristics like position and momentum.

Synthesizes proteins Explanation: Ribosomes are responsible for protein synthesis in a cell. They read the genetic information contained in messenger RNA (mRNA) and assemble amino acids in the correct order to form proteins.

Pumping blood: The main function of the heart is to pump blood throughout the body. It ensures that oxygen and nutrients are delivered to the body's cells and removes waste products.

The correct answer is  Modifies and packages proteins. The Golgi apparatus is responsible for modifying, sorting, and packaging proteins and lipids that are synthesized in the cell. It consists of a series of flattened membrane sacs called cisternae, and its function is crucial for the transport and delivery of molecules within the cell and to other parts of the organism.

Digestion. Explanation: Digestion is the process by which an organism converts food into usable energy. It involves the breakdown of complex food molecules into smaller, simpler molecules that can be absorbed and utilized by the body. The process of digestion occurs in multiple steps, starting from the mechanical and chemical breakdown of food in the mouth, followed by the passage of food through the esophagus into the stomach.

Newton Explanation: The SI unit for measuring the force of gravity is the newton (N). It is named after Sir Isaac Newton and is used to quantify the force exerted by an object due to gravity.

Energy: While energy is an important concept in science, it is not considered a state of matter. The three primary states of matter are solid, liquid, and gas.

Decibel. The decibel (dB) is the SI unit used to measure sound intensity, which refers to the amount of sound energy passing through a given area in a specific time. It is a logarithmic unit that compares the intensity of a sound to a reference level and is commonly used to express the loudness of sounds.

Ionization Explanation: Ionization is the process by which an atom gains or loses electrons, resulting in a charged particle called an ion. It occurs when atoms interact with other atoms, molecules, or external energy sources, causing the transfer of electrons and the formation of positively or negatively charged ions.

Evaporation: Evaporation is the process by which a liquid changes into a gas, usually due to an increase in temperature. It occurs at the surface of the liquid.

Evolution Explanation: Evolution is the process by which an organism changes and develops over time to adapt to its environment. It involves genetic changes that occur through natural selection, mutation, and genetic recombination, leading to the development of new species and variations within a population.

Photosynthesis: Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce glucose (a type of sugar) and oxygen. This process takes place in the chloroplasts of plant cells.

Skin: The skin is the largest organ in the human body. It serves as a protective barrier, regulates body temperature, and helps with sensory perception.

Exchange of oxygen and carbon dioxide Explanation: The main function of the respiratory system in the human body is to facilitate the exchange of oxygen and carbon dioxide between the body and the environment. This occurs through breathing, where oxygen is inhaled into the lungs and carbon dioxide is exhaled out of the body.

Gravity: Gravity is the force that pulls objects towards the center of the Earth. It is responsible for keeping objects on the ground and governs the motion of celestial bodies.

Copper: Copper is an excellent conductor of electricity. It is commonly used in electrical wires and circuits due to its high conductivity.

The correct answer is Absorbs harmful ultraviolet (UV) radiation. The ozone layer is a region of the Earth's stratosphere that contains a high concentration of ozone molecules (O3). It plays a critical role in protecting life on Earth by absorbing most of the Sun's harmful UV radiation, preventing it from reaching the surface. This helps to reduce the risks of skin cancer, cataracts, and damage to ecosystems.

Coal: While solar power, wind power, and hydroelectric power are renewable energy sources, coal is a non-renewable energy source. It is formed from the remains of plants that lived and died millions of years ago.

Filtration of waste products from the blood Explanation: The kidneys in the human body play a crucial role in filtering waste products from the blood and regulating the body's fluid balance. They remove excess water, toxins, and metabolic waste from the bloodstream and produce urine as a waste product.

Burning paper: Burning paper is an example of a chemical change. In this process, the paper undergoes a chemical reaction and is transformed into new substances, such as ash, smoke, and gases.

Mars: Mars is often referred to as the “Red Planet” because of its reddish appearance. The iron oxide (rust) on its surface gives it a distinctive red color.