Pyruvatic acids are formed during which stage of cellular respiration?

Heredity has an impact on personal health, but environmental factors are important as well. select the best answer from the choices provided

Amutagen is 1: a living thing that has undergone a mutation. 2: an agent that causes a mutation in dna. 3: a mutation that has affected one gene. 4: a chemical that can poison living cells.

What did the first language sound like