Based on the law of superposition, which layer of sedimentary rock is the oldest?
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Biology, 22.09.2019 16:30 jayloy4724
Based on the law of superposition, which layer of sedimentary rock is the oldest?
Answers: 2
Biology, 21.06.2019 17:50
Why should the united state be concerned about air pollution in china?
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Tlymphocytes mature in the? a. thyroid gland. b. bone marrow. c. spleen. d. thymus.
Answers: 1
Biology, 22.06.2019 13:00
How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?
Answers: 3
Biology, 22.06.2019 15:40
Which of these is one of the nitrogenous bases in dna? a. proline b. leucine c. glycine d. thymine
Answers: 2
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