Explanation

• The speed of sound in air at 0°C (32°F) is 332 meters per second.

The speed of sound in different materials:

• Air: 332 m/s
• Sea water: 1530 m/s
• Lead: 2160 m/s
• Gold: 3240 m/s
• Brick: 3650 m/s
• Copper: 4760 m/s
• Glass: 5100 m/s
• Aluminium: 6420 m/s

Explanation

Primary consumers are animals that eat producers (plants) and are the first level of consumers in a food chain. They are also known as herbivores. Examples of primary consumers include:

• Insects (bees, butterflies, ants)
• Small mammals (cows, goats, rabbits, mice, squirrels)
• Birds (finches, sparrows, robins)
• Fish (some species of fish that eat algae or aquatic plants)

Explanation

• An aqueous solution is one where water acts as the solvent, dissolving the solute.
• This type of solution is common in many chemical reactions and biological processes.

Explanation

Explanation

• The Soviet Union launched the first artificial satellite in space.
• It named Sputnik 1, on October 4, 1957.

Explanation

Explanation

• Bacteria and fungi are examples of decomposers.
• Which are organisms that break down dead organic matter into simpler compounds, releasing nutrients back into the ecosystem.
• This process is essential for nutrient cycling and the health of ecosystems.

Explanation

The cochlea is a part of the human ear, not the eye.

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

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)