Explanation

• Blue Whales have a thick layer of fat, known as blubber, under their skin that helps to keep them warm in cold water.
• This layer of fat can be up to 30 cm (12 in) thick and makes up about 50% of their body weight.

Explanation

• Fat provides approximately twice as much energy as the same amount of carbohydrate.
• This is because fat contains approximately 9 kcal/g (kilocalories per gram).
• Carbohydrate contains approximately 4 kcal/g.

Explanation

Fats are found in various food sources, including:

• Oil (such as olive oil, coconut oil, etc.)
• Butter
• Margarine
• Seeds (such as sunflower seeds, pumpkin seeds, etc.)
• Nuts (such as almonds, walnuts, etc.)

Explanation

• Protein is referred to as "body building" food.
• Because it provides the necessary building blocks for growth, maintenance, and repair of tissues in the body.
• It is essential for building and repairing muscles, bones, skin, hair, and nails, as well as producing enzymes and hormones.

Explanation

Milk, meat, eggs, and pulses are all rich sources of Protein, which is essential for:

• Building and repairing tissues
• Producing enzymes and hormones
• Maintaining healthy muscles, bones, and organs

Explanation

Minerals are essential nutrients that play a crucial role in many bodily functions, including:

• Building strong bones and teeth
• Regulating body functions
• Maintaining healthy immune systems
• Supporting nerve and muscle function

Explanation

• Carbohydrates are the body's primary source of instant energy.
• They are broken down into glucose.
• Which is absorbed into the bloodstream and transported to cells throughout the body.
• Where it is converted into energy.

Explanation

• Potato, wheat, rice, corn, and sweet fruits are all rich in carbohydrates.
• Carbohydrates are an important source of energy for the body.

Explanation

Heredity is the property that passes similar characteristics from parents to their offspring, making a human baby similar to human beings.

Explanation

In mammals, approximately 70% of their body weight is made up of water.

This water is distributed throughout the body and is found in various tissues and organs, including:

• Blood (83% water)
• Muscles (75% water)
• Brain (75% water)
• Bones (25% water)
• Skin (60% water)