Which one of these variables is a binomial random variable.

The authors use the word “backbone” in lines 3 and 39 to indicate that

Explain how you might determine the rate of weathering on a sample rock

Which statements about the two fossil images are correct? 1. cave bears are ancestors of plateosaurus. 2. plateosaurus were present on earth before ostracoderms. 3. ostracoderms were the first to die. 4. plateosaurus died after the ostracoderms. 5. cave bears are the oldest fossils.