Clues from geology and paleontology suggest that simple cells or their precursors arose aboutMultiple Choicesix billion years ago.six million years ago.four billion years ago.four million years ago.one million years ago.

(Q022) Which of the following statements is true?Group of answer choicesHominins first appeared in the late Mesozoic.The human genus, Homo, first appeared more than 7 million years ago.Fossils of modern humans (Homo sapiens) date back about 200,000 years.The Mesozoic is known as the Age of Mammals.

The first animals likely arose from aquatic protists called ______ about 570 million years ago.Multiple choice question.diatomsamoebaschoanoflagellatesdinoflagellates

The first ancestors of humans showed up about ______ years ago.A.10,000B.65 millionC.1 millionD.4.5 billio

(Q005) The first life formsGroup of answer choicesprobably occurred in oxygen-rich, shallow, warm ocean waters.may have been simple cells of bacteria or archaea living near hydrothermal vents.date back to 4.3 billion years.required oxygen for respiration.

Homo sapiens first appeared approximatelyChoose 1 answer:Choose 1 answer:(Choice A)   50,000 years agoA50,000 years ago(Choice B)   200,000 years agoB200,000 years ago(Choice C)   800,000 years agoC800,000 years ago