Explanation

Gastric juice is acidic in nature so it has a pH of about 1.5 to 3.5

Gastric acid is a digestive fluid formed within the stomach lining.

gastric juices are usually clear in color

It is the first major step in breaking food down into usable substances

HCL is an important component in gastric juice

Explanation

Compound: a substance that is made up of more than one type of atom bonded together.

Additional Information:

Explanation

Genes are the smallest functional units of hereditary material found on chromosomes.

Genes are made up of DNA.

Explanation

Vitamin K is found in the following foods: Green leafy vegetables.

Vegetables such as Brussels sprouts, broccoli, cauliflower, and cabbage.

Fish, liver, meat, eggs, and cereals.

Green leafy vegetables and intestinal bacteria are good source of vitamin K

Explanation

Oxyacetylene welding, commonly referred to as gas welding,

is a process which relies on combustion of oxygen and acetylene

Explanation

Ultra Violet rays: most harmful and are almost completely absorbed by our atmosphere.

Explanation

The most abundant naturally occurring gas is nitrogen (N2), which makes up about 78% of air.

Oxygen (O2) is the second most abundant gas at about 21%.

The inert gas argon (Ar) is the third most abundant gas at 0.93%.