Cyanobacteria fossils can be dated back to the Proterozoic Era, while fossils of icthyosaurs indicate that they lived during the Mesozoic Era.
Cyanobacteria fossils are dated back to the Proterozoic Era, around 2.5 billion to 541 million years ago, while ichthyosaurs lived during the Mesozoic Era, approximately 252 to 66 million years ago. Cyanobacteria played a crucial role in oxygenating the Earth, whereas ichthyosaurs were marine reptiles that thrived in ancient oceans. These eras are significant in understanding the development of life on our planet.
;
Jawaban:bunyi adalah suatu getaran atau sura yg diperoleh dari bunyi atau suara musik tersebut sedangkan alat musik itu alat yg bsa di petik atau di pukul seperti contohnya gitar atau gong alat musik tradisional dan modern yg sperti org² di zaman modern gunakan atau org yg ingin melestarikan alat² musik tradisional.maaf klo gk nyambung atau salah