The rise of life on the planet Earth some 4 billion years ago was made possible,in part,by the plentiful oxygen in Earth's early atmosphere.
Correct Answer:
Verified
Q21: Oxygen did not build up in the
Q22: In 1974,a radio message was sent out
Q23: Which of the following statements best reflects
Q24: The habitable zone around a star refers
Q25: Which of the following best explains why
Q27: Which of the following statements about matter-antimatter
Q28: At about what fraction of the speed
Q29: Which of the following describes a major
Q30: Even if Martian meteorites contained life,the life
Q31: The two Voyager spacecraft carry a message
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents