Answer:
I believe it's the krebs cycle!
Explanation:
Answer:
mitral valve
Blood flows from the right atrium into the right ventricle through the open tricuspid valve, and from the left atrium into the left ventricle through the open mitral valve.
Without the sun the planet would be extremely could and we'd all die, and plants use the sunlight for photosynthesis.
DNA is made up of molecules called nucleotides
Explanation:
Nucleotides containe a phosphate group, A sugar group and a nitrogen group. The four types of nucleotide bases are adenine (A,thymine(T),Guanine (G) ,cytosine(C) .In order to determine Genetic code