Plant require certain vital elements to thrive. Use the example of soils derived

Question

Plant require certain vital elements to thrive. Use the example of soils derived from serpentine (the legislature designated official California "state rock") to explain the relationship between parent material and the presence of elements in the soil that plants needs. Soils and climate: Using either tropical climates or desert climates, explain how regional climate conditions result in characteristic regional soils. Over a number of generations, scientists investigating Earth's long history have summarized their findings as the geologic column, which is a description of the sequence of major events shaping our planet and its living inhabitants. Upon what two major sources of evidence is the geologic column based? the sequence of fossils in sedimentary rocks the written records from ancient cultures dates derived from radioactive decay of certain minerals in the rocks magnetic reversal patterns in sea floor rocks Answer choices: a. 1 and 2 b. 2 and 3 c. 2 and 4 d. 1 and 3 e. 1 and 4 Approximately how long after Earth's surface formed did evidence of simple living things first appear in the fossil record? (Read the question carefully; it is not a request for how long ago this occurred.) a. 1 billion years b. 3.5 billion years c. 540 million years d. 2 billion years.

Explanation / Answer

Question 27) option A) 1 billion years

Reason : The oldest known fossils, in fact, are cyanobacteria from Archaean rocks of western Australia, dated 3.5 billion years old

While the age of earth is 4.5 billion years ago

So time taken = 4.5 - 3.5 = 1 billion years

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