B 5 years it takes 5 years before symptoms to appear
Answer:
C. Prevents sir pollution
Explanation:
Because when cars a running they produce fumes which pollute our air. Also that is a car electric charger
A Trombe wall (Trombe rhymes with prom, by the way) is a wall that warms trapped air, and then circulates it to help heat a house. Trombe walls are ideally made out of a material with a fairly high thermal mass materials (like bricks or concrete), and are often painted black to improve heat conduction
Group 13-17 contains metalloids. Boron, Silicon germanium, Arsenic, Antimony, Tellurium and Polonium are considered metalloids. They have properties of both metal and non metal. Some of the element are good semi-conductors .
<span>The bone with insufficient or abnormal collagen would fracture easily compared with a healthy bone. Collagen is the most abundant protein in our bodies , and is found in muscles, bones, skin , blood vessels, digestive system and tendons. Collagen provides integrity, firmness and elasticity to their structures, such as bones. Therefore a healthy bone has high integrity and firmness and thus can resist fractures and other mechanical damages.</span>
