Explanation

The fog in winter is caused by a combination of:

• Suspended water droplets (condensation)
• Dust particles in the air
• Smoke (from human activities or natural sources)

Explanation

• Leaves are the organs of plants responsible for photosynthesis.
• The process of converting light energy into chemical energy in the form of glucose, which is used as food for the plant.
• This is why leaves are often referred to as the "food factory" of the plant.

Explanation

Joseph Priestly discovered oxygen on August 1, 1774.

The most abundant element in the Earth's crust is oxygen, making up 46.6% of Earth's mass

Explanation

The correct sequence represents the increasing levels of organization in living organisms:

• Organelle (components within a cell)
• Cell (the basic structural and functional unit)
• Tissue (a group of similar cells performing a specific function)
• Organ (a structure composed of two or more types of tissue that work together to perform specific functions)

Explanation

• KARI (Korea Aerospace Research Institute) is the space agency of South Korea.
• KARI was established in 1989.
• It is responsible for the development of spacecraft, launch vehicles, and satellites.

Explanation

Secondary consumers are animals that eat primary consumers (herbivores). They are carnivores that feed on the animals that eat plants and plant products. Examples of secondary consumers include:

• Predators like lions, dogs, wolves, and hawks
• Fish that eat smaller fish or crustaceans
• Insects like ladybugs that eat aphids

Explanation

• Plants store the glucose produced during photosynthesis in the form of starch.
• A complex carbohydrate made up of many glucose molecules.
• Starch is stored in the plants roots, stems, leaves, and seeds, and serves as a energy reserve for the plant.

Explanation

 A solution that has a relatively less amount of solute in comparison to the solvent is called a dilute solution.

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ND20-1-2023

Explanation

• CNSA (China National Space Administration) is a government agency of the People's Republic of China.
• It was established in 1993.
• It is responsible for civil space administration and international space cooperation.

Explanation

The charges of Proton, Electron, Neutron respectively are:

• Proton: Positive charge (+1)
• Electron: Negative charge (-1)
• Neutron: Neutral charge (0)