Which of the following statements is true? a: carbon-14 can only be used to date rocks. b: oxygen speeds the decay of dead organisms. c: in turbite beds, the bottom layer is older than the top layer. d: epeirogenic changes deform the crust.

When is an original work considered public domain? a. when posted via social media b. when it is posted on the internet c. when a copyright symbol is not included with the piece of work d. when explicit permission is given by the author / owner

Kirk found a local community college with a two-year program and he is comparing the cost with that of an out-of-state two-year school. what is the expected total cost for one year at the local community college if kirk lives at home? what is the expected total cost for one year at the out-of-state school if kirk lives on campus?

Hashtags serve to identify the topic of a given tweet true false