Explanation

• The breathing centre of human body is lungs.
• Lungs are two soft spongy large balloon like organ located in the chest.
• The delicate lungs are protected by a cage of bones. This cage is called the ribcage.

Explanation

Vitamin C is found in:

• Citrus fruits like oranges, lemons, and grapefruit
• Other fruits like kiwi, guava, strawberries, and cantaloupe
• Vegetables like peppers, broccoli, Brussels sprouts, and potatoes

Explanation

• Omnivores are animals that eat both plants and animals.
• They have adaptations that allow them to digest and extract nutrients from a wide variety of food sources, including fruits, leaves, insects, small animals, and even carrion.
• Examples of omnivores include humans, bears, pigs, chimpanzees, and raccoons.

Explanation

• Fats are not found in vegetables.
• Most vegetables are primarily composed of carbohydrates, water, and fiber, with very small amounts of fat.

Explanation

Vitamin D deficiency can cause Rickets, a disease characterized by:

• Soft and weak bones
• Skeletal deformities
• Stunted growth
• Increased risk of fractures

Explanation

• Mercury is a silvery-white liquid metal that was traditionally used in clinical thermometers due to its high coefficient of expansion.
• It allowing for accurate temperature measurements.

Explanation

• The Earth is tilted at an angle of 23.5 degrees.
• This tilt is responsible for the changing of the seasons and the difference in the amount of sunlight reaching a given point on the surface during the course of a year.
• The tilt varies between 22.1 and 24.5 degrees in a cycle that averages about 40,000 years.

Explanation

• The average internal temperature of the human body is 37°C (98.6°F).
• It is the normal body temperature range for a healthy adult.

Explanation

• The Earth takes approximately 23 hours, 56 minutes, and 4 seconds to complete one rotation on its axis, which is called a sidereal day.
• This is the time it takes for the Earth to rotate once relative to the fixed stars.
• The extra 4 minutes is due to the Earth's slightly ellipsoidal shape and the effects of the Moon's gravitational pull.

Explanation

• Filtration is the process of separating an insoluble solid from a liquid by passing the mixture through a filter paper or a porous material.
• The solid particles are retained by the filter.
• While the liquid passes through, resulting in a clear separation of the two.