Answer:
HIV is a virus that attack the cell which helps to fight against infection and make person suffer from others infections and diseases.
Aquired immunodeficiency syndrome is the Aids caused by HIV virus that is chronic.
If the natural quality of water is destroyed by mixing unwanted and harmful substances in water, it is called water pollution.
Answer:
The Gadsden Purchase
Explanation:
It later became part of New Mexico and Arizona
Correct answer choice is:
B. Machine guns.
The machine gun, that therefore came to intimidate and even to encapsulate the battlefields of warfare One, was a reasonably primitive device once the general war began in August 1914. Machine guns of all armies were for the most part of the significant selection and unquestionably ill-suited to immovability to be used by speedily advancing army unit troops.
