Evidence indicates that the first life arose , the first animals arose , and the first large organisms on land arose .

A. about 350 million years ago; 60 million years ago; 50 million years ago
B. about 35 billion years ago; 6 billion years ago; 5 billion years ago
C. over 3.5 billion years ago; over 1.5 billion years ago; 2 billion years ago
D. at least 3.5 billion years ago; 600 million years ago; 480 million years ago

What two properties affect the density of ocean water

Why would the crystals in an intrusive igneous rock be larger than the crystals in a chemical sedimentary rock? a. intrusive rocks form beneath the earth's surface, so they cool very slowly, which produces larger crystals. b. chemical sedimentary rocks form from dissolved substances on the earth's surface with very high heat and cool very slowly, which produces smaller crystals. c. chemical sedimentary rocks and intrusive rocks have crystals of the same size. o d. chemical sedimentary rocks form deep in the earth, so they cool slower, which produces small crystals. € read question correct:

How do convection currents form underwater mountains?