Study the image about geologic time. A geochronological scale measured in Millions of Years Ago or M Y A. Cenozoic era: Paleogene period, 66 to 23 M Y A, diatrima, many types of mammals, smilodon. Neogene period, 23 to 2. 6 M Y A, smilodon, mammoth. Quaternary period, 2. 6 to today, human, mammoth. During which period did humans first appear on Earth? Quaternary Neogene Paleogene Cenozoic.

15 points come and ! which characteristic describes all bacteria? a rod-shaped b microscopic c multicellular d autotrophic

Indicate whether the following statements about the biases in the fossil record are true or false. a) inland species are more likely to be preserved than marine species b) organisms with hard body parts are more likely to be preserved than are those composed soft tissues. c) species that existed over a larger area are more likely to be preserved than species existing over a smaller area. d) organisms that lived very long ago are more likely to be found as fossils than organisms that lived relatively recently e) the fossils of larger organisms are more likely to be found than the fossils of smaller organisms

In the water cycle , when does water undergo a chemical change