Answer:
Human activity can affect the amount of carbon in the atmosphere. When fossil fuels like oil, coal, and natural gas are burned, carbon dioxide is released into the atmosphere as waste.
Explanation:
Answer:
Boron is the fifth element of the periodic table (Z=5), located in Group 13. It is classified as a metalloid due it its properties that reflect a combination of both metals and nonmetals. Aluminum (also called Aluminium) is the third most abundant element in the earth's crust.
A, the others are unrealistic speeds.
If this is a true or false question, then the answer is true.
