Question

22. What type of structure is shown in the following figure: A. syncline B. monocline C. dome D. anticline E. floods 23. Which of the following examples constitutes the GREATEST geologic risk? A. a tsunami along the coastline of the Pacific Northwest B. a backcountry forest during peak fire season C. a volcanic eruption on an uninhabited volcanic island D. an earthquake in the middle of the Sahara desert E. an avalanche in central Greenland 24. During which division of geologic time did banded iron formations form? A. Paleozoic B. Mesozoic C. Precambrian D. Cenozoic E. Holopcene 25. Which of the following statements accurately accounts for why there were no advanced life forms on Earth early in its geologic history? A. initially the atmosphere contained mostly water vapor, CO2 and nitrogen B. oxygen is required but it was not abundant until about 2 billion years ago C. eukaryotic cells are required but they could not develop until enough oxygen was present D. prokaryotic bacteria first needed to create enough oxygen through photosynthesis E. all of the above - years ago. 26. The explosion of advanced life forms on Earth began about A. 4.6 billion B. 3.5 billion C. 2 billion D. 600 million E. 60 million

Answer 1

Answer-22)

The structure shown in the figure is a cross sectional digram of anticline.

An anticline is basically a type of fold that has an arch-like shape and has its oldest beds at its core.

Hence, option D is correct.

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