A sample of thulium-171 has a mass of 0.4055 grams. How much is left after 6 half-lives?

Which of these sequences lists the correct order for the creation of sedimentary rock from sediment? a. deposition, burial, compaction, cementation b. burial, deposition, compaction, cementation c. compaction, deposition, burial, cementation d. cementation, deposition, burial, compaction

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space