… deposited at the seafloor some 2700 million years ago. (Source: … What did the Earth look like 2.7 billion years ago and what were … to sea already as early as 2,700 million years ago. "It came as …

… by far the largest group with 407 new enrollments, followed by … exchange students. Thus, over 1.570 students from more than 120 … Germany (18 percent), India (8.7 percent), Pakistan (5.8 …