The backbone of DNA and RNA is composed of . DNA is double stranded due to interactions between
adenine, cytosine, guanine, and thymine, which are
• . Uracil is a

Match each term to its best definition? sedimentary depositional enviornment

How do the evolutionary chart and the video support the claim that all living things are made up of cells?

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?