BIOt (history of life on earth) Questions and
Answers latest Update | 100% Correct
First Life
microbial life
photosynthesis emerges
rise of oxygen
first multicellular animals
early animal groups
possible end - ✅✅key events in the origin and evolution of life
Precambrian Time - ✅✅spans over 80% of earths history
Precambrian Time - ✅✅life begins after earth cools, forming a solid crust and
oceans
first life - ✅✅formation of first cell membranes and self replicating molecules
near volcanic vents
microbial life - ✅✅dominance of bacteria
photosynthesis emerges - ✅✅cyanobacteria releases oxygen as a byproduct of
beginning the great oxidation event
rise of oxygen - ✅✅oxygen levels gradually increase, forming the O zone layer
, first multicellular animals - ✅✅appearance of the ediacaran biota
dickinsonia - ✅✅example of the ediacaran biota
early animal groups - ✅✅sponges, cnidarians, and annelid survive the
precambrian
possible end - ✅✅a prolonged global ice age may have cause widespread
extinction
paleozoic era - ✅✅also known as old life
3.8 - 3.4 Billion years ago - ✅✅First life was how many years ago
600 million years ago - ✅✅when was the first multicellular animals appearance
2.4 billion years ago - ✅✅when was the Great Oxidation Event
540 to 250 million years ago - ✅✅duration of Paleozoic Era
Cambrian
Ordovician
Silurian
Answers latest Update | 100% Correct
First Life
microbial life
photosynthesis emerges
rise of oxygen
first multicellular animals
early animal groups
possible end - ✅✅key events in the origin and evolution of life
Precambrian Time - ✅✅spans over 80% of earths history
Precambrian Time - ✅✅life begins after earth cools, forming a solid crust and
oceans
first life - ✅✅formation of first cell membranes and self replicating molecules
near volcanic vents
microbial life - ✅✅dominance of bacteria
photosynthesis emerges - ✅✅cyanobacteria releases oxygen as a byproduct of
beginning the great oxidation event
rise of oxygen - ✅✅oxygen levels gradually increase, forming the O zone layer
, first multicellular animals - ✅✅appearance of the ediacaran biota
dickinsonia - ✅✅example of the ediacaran biota
early animal groups - ✅✅sponges, cnidarians, and annelid survive the
precambrian
possible end - ✅✅a prolonged global ice age may have cause widespread
extinction
paleozoic era - ✅✅also known as old life
3.8 - 3.4 Billion years ago - ✅✅First life was how many years ago
600 million years ago - ✅✅when was the first multicellular animals appearance
2.4 billion years ago - ✅✅when was the Great Oxidation Event
540 to 250 million years ago - ✅✅duration of Paleozoic Era
Cambrian
Ordovician
Silurian
