Slide 1 Life Science Chapter 7 Part 1 Living Things Slide 2 Characteristics of Living Things All living things are composed of cells All living things are composed of the…
Slide 1 History of Life on Earth Chapter 12 Slide 2 HOW DID LIFE BEGIN? Section 12-1 Slide 3 The Early Earth was Lifeless When Earth formed about 4.3 billion years ago, it…
How Did Life Begin? When Earth formed, about 4.5 billion years ago, it was a fiery ball of molten rock. Eventually, the planetâs surface cooled and formed a rocky crust.…
History of Life on Earth History of Life on Earth Chapter 12 How did life begin? Section 12-1 The Early Earth was Lifeless When Earth formed about 4.3 billion years ago,…