Regarding early life on Earth,
A. microbial life existed for billions of years before plant and animal life.
B. microbial life existed long before animals but has been around for about the same amount of time as plants.
C. microbial life, plant life, and animal life all appeared at about the same time.
D. it is impossible to determine which type of life first appeared.
Answer:A
Regarding early life on Earth,
A. microbial life existed for billions of years before plant and animal life. B. microbial life existed long before animals but has been around for about the same amount of time as plants. C. microbial life, plant life, and animal life all appeared at about the same time. D. it is impossible to determine which type of life first appeared.