Answer:
The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is a valve through which blood passes before leaving each chamber of the heart. ... They act as one-way inlets of blood on one side of a ventricle and one-way outlets of blood on the other side of a ventricle.
Explanation:
Answer:
Blocking the rays physically....
Explanation:
There have two ways that sunscreen protect minerals nanoparticles from uv radiations. Those are; blocking the rays physically
Absorbing them chemically.
Minerals powders are in nanoparticles from they come on clear without leaving much of white residue on skin
Answer:Ginger Methods of Extraction of Drugs from Silver
Explanation:
Answer: Throat
Explanation:
The common name of pharynx is throat.This a ring like muscular tube that runs from the back of the nose and goes down to the neck.
It has three main sections: The nasopharynx, laryngopharynx and oropharynx. The laryngopharynx is also called as hypophaynx.
The main function of throat is to provide a passage to the food, fluid and air entering the mouth.
hence, the correct answer is option A
