What role did the creation of the ozone layer have in the distribution of life forms across the planet and why?
What will be an ideal response?
Answer: Prior to the ozone layer, life was confined to the sea. Water could protect early life forms from harmful UV radiation. However, ozone also has the capability of reflecting harmful UV rays, so once the ozone developed, life could leave the ocean and begin to colonize the land.
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Which of the following statements best describes an element?
A) a material consisting of only one type of atom B) a material that is pure C) a material that has consistent physical properties D) a material with more than one type of atom E) a material that has consistent chemical properties
The Early Cretaceous sedimentation in the Gulf Coastal region was related to a
(transgressive/regressive) ____________________ seaway. Fill in the blank(s) with the appropriate word(s).
How can scientists learn about climatic history?
What will be an ideal response?
Water particle orbits for a shallow water wave are ________.
A. circular and extend to the seafloor B. circular and extend halfway to the seafloor C. elliptic and enlarge with depth D. circular at the surface and elliptical at the sea floor E. elliptic and flatten with depth