Uranium 235 decays to lead 207 by 7 alpha and 6 beta steps. (True or false?)

Uranium 235 decays to lead 207 by 7 alpha and 6 beta steps. Indicate whether the statement is true or false.

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Q. 2 - Potassium 40 decays to argon 40 by a single electron capture. Indicate whether the statement is true or false.

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Q. 3 - All radioactive elements decay in only one decay step. Indicate whether the statement is true or false.

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Q. 4 - A fossil that is particularly useful for correlation is an evolutionary fossil. Indicate whether the statement is true or false.

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Q. 5 - Fossils are found almost exclusively in sedimentary rocks. Indicate whether the statement is true or false.

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Q. 6 -

James Hutton concluded that Earth must be very old and wrote that we find no vestige of a beginning,
  and no prospect of an end. Indicate whether the statement is true or false.