anonymous
  • anonymous
According to fossil findings, mammals first appeared on earth approximately how long ago? [a] 50 million years [b] 65 million years [c] 1 billion years [d] 4 billion years
Biology
chestercat
  • chestercat
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shreehari499
  • shreehari499
Hi! @vita955 Before i help you out with it, why dont you give it a guess?
shreehari499
  • shreehari499
Hi! @vita955 Before i help you out with it, why dont you give it a guess?
anonymous
  • anonymous
1 billion

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anonymous
  • anonymous
?
shreehari499
  • shreehari499
No..the first placental mammals were present approximately 65 million years ago..An early mammal fossil discovered in Mongolia led to researchers asserting that the origins of placental mammals, which include humans, can be dated to approximately 65 million years ago.
anonymous
  • anonymous
thank you!
shreehari499
  • shreehari499
Welcome! Happy OpenStudying!!

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