Explanation

Reproduction is the biological process by which new individuals are produced, ensuring the continuation and survival of a species.

It is a fundamental aspect of life, allowing species to perpetuate themselves, adapt to their environments, and evolve over time.

Explanation

The dermis is the middle layer of the skin.

It contains a network of blood capillaries that supply oxygen and nutrients to the skin cells.

The dermis also contains hair follicles, sweat glands, and sebaceous glands.

Explanation

The kidneys are enclosed in a membrane called the peritoneum, which is a thin layer of tissue that lines the abdominal cavity.

The peritoneum supports and protects the kidneys, as well as other organs in the abdominal cavity.

Explanation

The Tetanus toxoid vaccine is typically injected into the muscle of the upper arm.

This intramuscular injection ensures effective absorption and immune response.

Explanation

Each gram of fat supplies the body with approximately 9 calories.

This is more than the energy provided by carbohydrates (4 calories per gram) and protein (4 calories per gram).

Explanation

Irritation or stimulation triggers a response in organisms.

It leading to movement as they react to the changes in their environment.

Explanation

• Group IIIA (or group 13) elements, such as boron (B), aluminum (Al), and gallium (Ga), lose three electrons to form ions with a charge of +3.
• This means that they typically form compounds by losing three electrons, resulting in a valency of +3.

Explanation

Evaporation occurs when molecules on a liquid's surface gain enough energy to escape into the air, and this can happen at any temperature, not just at boiling point.

It's a slow process at lower temperatures, but faster at higher temperatures.

Explanation

The potential energy (PE) of an object is calculated as:

PE = mass x gravity x height

= 1 kg x 10 m/s^2 x 1 m

= 10 Joule

So, the energy possessed by the body is 10 Joule.

Explanation

One Faraday (F) is equal to 96,500 Coulombs (C).

The Faraday is a unit of electric charge.

It represents the amount of charge required to deposit one mole of electrons (6.022 x 10^23 electrons) at an electrode.