Explanation

Calcium is an essential mineral found in various foods, including:

• Milk and dairy products (cheese, yogurt)
• Egg shells
• Dark green vegetables (broccoli, kale, spinach)
• Small fish (salmon, sardines) and their bones
• Fortified foods (cereals, juices)

Calcium is crucial for:

• Building and maintaining strong bones and teeth
• Muscle function and contraction
• Nerve function and transmission
• Blood clotting and wound healing

Explanation

The moment of inertia depends on the mass of the object,

how the mass is distributed relative to the axis of rotation,

and the axis of rotation itself,

but it does not depend on the angular velocity.

Explanation

Louder sound is characterized by high amplitude.

Amplitude refers to the strength of the sound wave.

A higher amplitude results in a louder sound.

Explanation

• Satellites in orbit around the Earth use sensors and cameras to collect data and images of the planet's surface, atmosphere, and oceans.
• It enabling remote sensing applications such as land use mapping, crop monitoring, and natural disaster management.

Explanation

• A spacecraft is a man-made object designed to perform specific tasks in space.
• Such as exploration, communication, or research. 
• Examples of spacecraft include satellites, space stations, and probes.

Explanation

• A barometer measures atmospheric pressure by measuring the height of a mercury column that is supported by the pressure of the surrounding air.
• The higher the mercury column, the higher the atmospheric pressure.

Explanation

• Litmus paper is a simple and effective way to test whether a substance is an acid or a base.
• It turns red in acidic solutions and blue in basic solutions.

Explanation

• A chemical reaction is a process in which one or more substances are converted into new substances, often with a change in chemical composition and properties.
• Chemical reactions involve the breaking and forming of chemical bonds, resulting in a transformation of the original substances.

Explanation

• Leaves changing colors in the fall is an example of a chemical reaction.
• During this process, the production of chlorophyll (the green pigment) slows down, and the production of other pigments.
• Like carotenoids and anthocyanins increases, causing the leaves to change color.

Explanation

• During Anaphase, the contraction of spindle fibers takes place, resulting in the separation of sister chromatids and their movement towards opposite poles of the cell.
• This stage is characterized by the pulling apart of the sister chromatids, ensuring each daughter cell receives a complete set of chromosomes.