The contamination of atmosphere air due to gaseous substance A. air pollution
B. water pollution
C. air
D. soil
plz answer the question

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.

Why is the structure of molecule important to its function?

How many protons, electrons, and neutrons are in each of the following isotopes? a. zirconium-90 b. palladium-108 c. bromine-81 d. antimony-123