In the Bohr model, electrons occupy quantized energy levels, which leads to stable orbits around the nucleus.

The stability of the electron orbits in an atom is primarily explained by quantum mechanics.

The stability of the nucleus is primarily due to the strong nuclear force, which binds protons and neutrons together.

The stability of the nucleus is primarily due to the strong nuclear force, which binds protons and neutrons together.

Gases have low density because their particles are far apart, leading to a larger volume for the same mass.

Solids maintain their shape because their particles are tightly packed and can only vibrate in place, preventing them from flowing.

The main reproductive structure of angiosperms is the flower, which facilitates reproduction through pollination.

Antioxidants help prevent oxidative stress by neutralizing free radicals in the body.

Dietary fiber aids digestion by promoting regular bowel movements and preventing constipation.

The small intestine is the main site for the absorption of nutrients.

Protein digestion primarily occurs in the stomach, where pepsin breaks down proteins into peptides.

Protein digestion begins in the stomach, where pepsin breaks down proteins into peptides.

The main source of alkanes is petroleum, which contains a mixture of hydrocarbons.

Glaciers are the main source of freshwater on Earth, storing about 68.7% of the world's freshwater supply.

Vehicle emissions are the main source of nitrogen oxides (NOx) in the atmosphere.

Fish oil is a rich source of omega-3 fatty acids, which are important for heart health and brain function.

Chlorofluorocarbons (CFCs) are the primary substances responsible for ozone layer depletion.

Chlorofluorocarbons (CFCs) are the primary substances responsible for the depletion of the ozone layer.

Single-use plastics, such as bags and bottles, are a major contributor to plastic pollution in oceans.

Sulfur dioxide is released from various sources including volcanic eruptions, automobile emissions, and industrial processes.

Glycogen is the main storage form of carbohydrates in animals, while starch is the storage form in plants.

Cellulose is the main structural component of plant cell walls.

Glucose is the main substrate for respiration in plants, as it is broken down to release energy.

The discussion highlights the multifaceted importance of biodiversity, including its benefits to human health and economic systems.

The passage highlights that cultural diversity enriches societies by bringing different perspectives and fostering innovation and creativity.

The passage emphasizes that cultural heritage plays a vital role in shaping individual and community identities.

The passage highlights the negative impact of social media on the quality of conversations, indicating that it has led to a decline in meaningful interactions.

The passage primarily discusses how climate change affects various species and ecosystems, highlighting the loss of biodiversity as a critical concern.

Butene exhibits geometric isomerism due to the presence of a double bond, allowing for cis and trans configurations.

Alkanes primarily undergo substitution reactions, especially in the presence of halogens.