Im not sure if this will be the answer you teacher is looking for but i think the answer would be
Hair on the head protects scalp from injury and sunlight
Eyelashes and eyebrows protect eyes
Nostril and ear hairs protect from foreign particles
Answer:
Atrioventricular valves.
Explanation:
Heart is the muscular organ of the body and acts as the pumping organ of the body. Human heart is not bigger than the fist and the human heart is divided into four chambers.
Heart murmur may be defined as the swishing sound that are made during the blood flow. This represent the heart problem. The bicuspid valve of heart is atrioventricular valve. The damage in the atrioventricular valve causes the heart murmuring.
Thus, the answer is atrioventricular valves.
Mineral resources are solid, crystalline substances made inside the Earth. These include granite, marble, limestone and precious stones which are used for jewellery. Minerals are used to make all sorts of different things which we use every day.
Energy resources are things we can use to turn into electrical power. These include fossil fuels, nuclear, wind, water and solar power.
During the 1980s, iran and iraq battled in a war from september , 1980 - august 1988.
