Rock samples taken from the remains of an asteroid about twice the size of a 6-mile-wide asteroid that eradicated the dinosaurs has been dated to be 3.7 billion years old and thus is evidence of earliest known asteroid impact on earth.
A) has been dated to be 3.7 billion years old and thus is
B) has been dated as 3.7 billion years old and thus
C) have been dated to be 3.7 billion years old and thus are
D) have been dated as being 3.7 billion years old and thus
E) have been dated at 3.7 billion years old and thus are
Please explain the reasoning
A) has been dated to be 3.7 billion years old and thus is
B) has been dated as 3.7 billion years old and thus
C) have been dated to be 3.7 billion years old and thus are
D) have been dated as being 3.7 billion years old and thus
E) have been dated at 3.7 billion years old and thus are
Please explain the reasoning
