Answers: 1
SAT, 25.06.2019 22:00, hannah1571
In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.
Answers: 1
SAT, 28.06.2019 18:30, redrhino27501
The difference between the observed value and the mean of the set of values is a
Answers: 1
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