Biology, 28.02.2020 20:27, ashtonrieper2721
Short-spined sea urchin fossils were found directly above long spined sea urchin fossils in a layer of rock. What do the differences between the two sets of sea urchin fossils suggest about them? a. The longer spines developed as the shorter-spined sea urchins grew older. b. The longer-spined sea urchins existed before the shorter-spined sea urchins. c. The shorter-spined sea urchins stretched their spines to ward off predators. d. The shorter spines did not protect the sea urchins well enough and they died off
Answers: 1
Biology, 21.06.2019 21:50, NightCaribou644
Drag each tile to the correct box. match the given symbol or molecular formula to the term that best describes it. element -organic compound -inorganic elemental molecule -inorganic compound -answers given: so2, k, ci2, c6h6
Answers: 1
Biology, 21.06.2019 22:30, charmrenee
What are the result of when individual components in an organism interact with others to create noval stucture and function called
Answers: 2
Short-spined sea urchin fossils were found directly above long spined sea urchin fossils in a layer...
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