Answer:
evolution of life on Earth
Explanation:
Life began on Earth at least 3.5 to 4 billion years ago, and it has been evolving ever since. At first, all living things on Earth were simple, single-celled organisms. Much later, the first multicellular organisms evolved, and after that, Earth's biodiversity greatly increased.
Proteins are made up of 20 different amino acids
Answer:
mitochondrion becoz it is a membrane bounded organelle which is only present in eukaryotic cell
