The enzyme that breaks down H2O2 is called catalase.
DNA structure. DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C).
The answer is: A
Chemical energy
15 years for scientist to classify an area's weather as its climate.
