Identify the level of organization that is being described Choose from the following terms: atoms, organelles, cells, tissues, organs, organ system, organism, population, community, ecosystem and biosphere. help po ;-; imamark ko po kita ng brainliest

1. savanna, desert, grassland, tundra
2. chlorine, carbon, hydrogen, calcium, argon
3. epithelial, cartilage, blood, fats, bone 4.protons, electrons, neutrons
5. heart, lungs, kidneys, liver, pancreas, stomach
6. chloroplasts, mitochondria, ribosomes, centriole, vacuole​