Explanation

• There are around 639 skeletal muscles.
• The three main types of muscle include skeletal, smooth, and cardiac.
• The sartorius muscle is a thin, long, superficial muscle in the anterior compartment of the thigh.

Explanation

Vitamin D is essential for: Strengthening bones and teeth and Preventing Rickets, a disease characterized by:

• Soft and weak bones
• Skeletal deformities
• Stunted growth
• Regulating calcium levels and bone mineralization

Explanation

In the Fahrenheit scale:

• The freezing point of water is 32°F
• The boiling point of water is 212°F

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

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

In the Fahrenheit scale:

• The freezing point of water is 32°F
• The boiling point of water is 212°F

Explanation

• Rabbits feed on seeds and leaves, which are plant materials, making them herbivores.
• Herbivores are animals that primarily consume plants and plant products, such as leaves, stems, roots, flowers, fruits, and seeds.

Explanation

• The rotation of the Earth on its axis causes day and night.
• As different parts of the planet face towards or away from the Sun.

Explanation

Vitamin A is found in:

• Carrots (beta-carotene, a precursor to vitamin A)
• Cod-liver oil (rich in vitamin A)
• Oil (such as cod-liver oil, halibut-liver oil, and shark-liver oil)

Additionally, vitamin A is also found in other foods like:

• Sweet potatoes
• Dark leafy greens (like spinach and kale)
• Squash
• Fatty fish (like salmon and mackerel)
• Egg yolks
• Dairy products (like milk and cheese)

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.