Explanation

Vitamins play a crucial role in protecting us from many diseases, such as:

• Vitamin C: boosts immune system, fights off infections
• Vitamin D: essential for bone health, prevents rickets and osteomalacia
• Vitamin E: acts as an antioxidant, protects cells from damage
• Vitamin K: necessary for blood clotting, prevents bleeding disorders

Explanation

• The ribcage, also known as the thoracic cage.
• It is a bony structure that encloses and protects the lungs, heart, and other organs in the thoracic cavity.
• It is composed of 24 ribs, the sternum (breastbone), and the 12 thoracic vertebrae.

Explanation

• In Winter, days become shorter and nights become longer, due to the Earth's axis being tilted away from the Sun.
• Resulting in less direct sunlight reaching the Northern Hemisphere.

Explanation

• Mould is a type of fungus that is a decomposer.
• It breaks down dead organic matter.
• Such as plant material, into simpler compounds, releasing nutrients back into the environment.

Explanation

Vitamin A deficiency can cause Night Blindness, as well as other health problems such as:

• Dry skin and eyes
• Impaired immune function
• Poor wound healing
• Increased risk of respiratory and urinary tract infections

Explanation

The life cycle of a bean plant:

• Seed: The plant begins as a seed, containing the embryo and stored food.
• Germination: The seed absorbs water, sprouts, and grows its first roots and leaves.
• Leaf growth: The plant develops its leaves, stems, and roots, and begins to photosynthesize.
• Flowering: The plant produces flowers, which contain the reproductive organs and allow for pollination.

Explanation

• The heart is the pumping station of the human body.
• It is responsible for pumping blood throughout the body.
• It supplying oxygen and nutrients to tissues and organs.

Explanation

Force can change an object's:

• Direction (by changing its trajectory)
• Size (by compressing or expanding it)
• Speed (by accelerating or decelerating it)

But force cannot change an object's mass.

Mass is a fundamental property of an object that remains constant, regardless of the forces acting upon it.

Explanation

In the absence of sunlight, the entire food chain would become inactive and collapse because:

• Plants and algae, the primary producers, cannot undergo photosynthesis and produce energy.
• Herbivores cannot feed on plants, and carnivores cannot feed on herbivores.
• The energy flow from producers to consumers would be disrupted, leading to a collapse of the food chain.

Explanation

• Animals in grassland environments have broad feet or hooves that help them escape quickly from predators, such as lions, cheetahs, and hyenas.
• The broad feet provide stability and support for rapid movement, allowing them to run fast and efficiently.