Chemistry as a subject has a significant importance in our daily lives and the society in general. Everything on the earth is made of chemicals. ... It also describes various chemical elements preset in the environment, their reactions, and effects on the environment.
Not always because there could be birth defects, mutations, or other variables.
Answer:
I'd say it's The discovery that all protists come from one common ancestor.
Explanation:
Based on some quick research, The current attempts of classification focus on grouping protists into between three and ten kingdoms, based on species’ common evolutionary ancestors.
A. is the answer. DNA forms genes. The codons in the DNA make the phenotype.