Absorption is the phenomenon where a substance absorbs and emits light of different wavelengths. Different substances have different absorption spectra, leading to the perception of different colors.

Photosynthesis is the process by which plants and some other organisms convert light energy into chemical energy. It involves the absorption of light by chlorophyll in chloroplasts and the conversion of carbon dioxide and water into glucose and oxygen.

Taxonomy is the branch of biology that studies the classification and naming of organisms. It involves organizing and categorizing organisms into hierarchical groups based on their similarities and evolutionary relationships.

The Doppler effect is the term for the change in frequency or wavelength of a wave as it moves relative to an observer. It is commonly observed with sound waves, where the frequency appears higher when the source is approaching and lower when the source is moving away from the observer.

Ohm is the unit of measurement for electrical resistance. It is named after the German physicist Georg Simon Ohm and is represented by the symbol Ω (omega).

Genetics is the study of the structure, function, and evolution of genes. It involves understanding how genes are inherited, how they determine traits, and how they can be altered or manipulated.

Oxygen (O2) is not considered a greenhouse gas. Greenhouse gases are gases that trap heat in the Earth’s atmosphere and contribute to the greenhouse effect. Carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are examples of greenhouse gases that play a role in climate change. Oxygen is an essential component of the atmosphere, but it does not possess the properties that contribute to the greenhouse effect.

Radioactivity is the name for the process by which an unstable atomic nucleus emits radiation to become more stable. This can involve the emission of alpha particles, beta particles, or gamma rays.

Parasitism is the type of symbiotic relationship where one organism benefits while the other is harmed. The organism that benefits is called the parasite, while the organism that is harmed is called the host.

Evaporation is the process by which liquid water changes into water vapor. This occurs when water molecules gain enough energy to overcome the attractive forces between them and escape into the air as gas.

Mercury is the densest planet in our solar system. Despite being the smallest planet, it has a high density due to its large iron core.

An atom is the smallest unit of matter that retains the chemical properties of an element. Atoms are composed of subatomic particles such as protons, neutrons, and electrons.

Neurology is the study of the structure, function, and disorders of the nervous system. It focuses on the brain, spinal cord, nerves, and their relationship with behavior and cognition.

Natural gas is not considered a renewable source of energy. It is a fossil fuel that is primarily composed of methane. Natural gas is extracted from underground reservoirs and is commonly used for heating, electricity generation, and industrial processes. Unlike solar power, wind power, and hydroelectric power, which rely on naturally replenished sources such as sunlight, wind, and water, natural gas is a finite resource and its extraction and combustion contribute to greenhouse gas emissions and climate change.

Joule is the SI unit for measuring energy. It is used to quantify various forms of energy, such as mechanical, electrical, and thermal energy.

Electrons have the smallest mass among the given options. They are subatomic particles that orbit around the nucleus of an atom and carry a negative charge.

The skin is the largest organ in the human body by surface area. It serves as a protective barrier, regulates body temperature, and plays a role in sensation and vitamin D synthesis.

Endocytosis is the process by which a cell engulfs and takes in solid particles from its surroundings. This process involves the formation of a vesicle around the particle, allowing it to be transported into the cell.

An atom is the smallest unit of an element that retains the chemical properties of that element. Atoms consist of a nucleus, containing protons and neutrons, surrounded by electrons.

Plasma cell is not a type of blood cell. The three main types of blood cells are red blood cells (carry oxygen), white blood cells (part of the immune system), and platelets (involved in blood clotting).

Meteorology is the branch of science that deals with the study of the Earth’s atmosphere, weather, and climate. Meteorologists analyze and predict weather patterns, study atmospheric phenomena, and investigate climate change.

Deoxyribonucleic acid (DNA) is not a type of RNA. DNA is a nucleic acid that contains the genetic information of an organism, while RNA (ribonucleic acid) plays a role in protein synthesis and gene expression.

Refraction is the term for the bending of light as it passes from one medium to another with a different refractive index. This bending is caused by the change in speed of light as it enters a different medium.

Ferromagnetism is the phenomenon where a material retains its magnetic properties even after the external magnetic field is removed. Examples of ferromagnetic materials include iron, nickel, and cobalt.