Explanation

Digestion begins in the mouth, where food is chewed and mixed with saliva that contains enzymes to break down carbohydrates. 

Here's a brief overview of the digestion process:

• Mouth: Food is chewed and mixed with saliva that contains enzymes to break down carbohydrates.
• Esophagus: Food is swallowed and passes through the esophagus into the stomach.
• Stomach: Food is mixed with stomach acid and enzymes to break down proteins and fats.
• Small Intestine: Nutrients are absorbed into the bloodstream.
• Large Intestine: Water and electrolytes are absorbed, and waste is eliminated.

Explanation

Magnesium deficiency can contribute to or exacerbate all of the following health issues:

• Painful joints: Magnesium helps regulate inflammation and muscle function, and deficiency can lead to joint pain and stiffness.
• Osteoporosis: Magnesium is essential for bone mineralization and density; deficiency can increase the risk of osteoporosis and fractures.
• Memory loss: Magnesium plays a role in neuronal function and synaptic plasticity; deficiency has been linked to cognitive impairment and memory loss.
• Diabetes: Magnesium helps regulate insulin sensitivity and glucose metabolism; deficiency can increase the risk of developing type 2 diabetes.

Explanation

• In a normal man, the average heart beat is 72 times per minute.
• But it may vary from 70-80 beats per minute.

Explanation

• Cat and Dog is a secondary consumer.
• Because it eats primary consumers (herbivores).
• Like mice, birds, and rabbits.

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

• Skin is the largest organ of our body.
• The skin is made up of three main layers: the epidermis, dermis and subcutis.
• It covering approximately 22 square feet (2 square meters) in adults.

Explanation

• Decomposers are organisms that break down dead and waste products, releasing useful elements such as carbon, nitrogen, and phosphorus back into the soil and environment.
• This process is called decomposition, and it's an essential step in the nutrient cycle.

Decomposers include organisms like:

• Bacteria
• Fungi (such as mushrooms)
• Detritivores (such as earthworms and insects)

By breaking down organic matter, decomposers help to:

• Recycle nutrients
• Improve soil structure and fertility
• Support plant growth and development

Explanation

• A wedge is an object with at least one slanting side ending in a sharp edge, which is used to cut or split material apart.
• Examples: Axes, knives, chisels, plough nall, sharpener, iron nails and pins (push pin).

Explanation

The stomach is a J shaped sac about one foot in length that lies under the diaphragm on the left of the abdominal cavity.

The stomach has three parts:

1. The region where the stomach opens is known as the cardiac stomach.
2. The main body is known as fundus.
3. The posterior portion which opens to the intestine is known as the pyloric stomach.

Explanation

• Inheritance refers to the passing down of traits or characteristics from parents to their offspring through the transmission of genetic information.
• This occurs through the transmission of DNA from one generation to the next.