What happens when an acid reacts with a metal such as magnesium?
a the metal becomes polished and shiny
b a chemical reaction occurs
c the acid is converted to a base
d the temperature decreases

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Modern weaponry has increased the number of deaths in wars and violent conflicts.

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist