An epicenter station is 5,600 km away how long after first p wave the first s wave​

Seed plants that lived during the carboniferous impact life on earth today because a. they are the ancestors of all plant life on earth. b. their remains formed coal, which is an important resource. c. they produced fossils that are used to date many geologic events. d. their presence caused oxygen levels to drop, allowing animals to evolve.

Combine like terms. do not forget to use the distributive property to simplify the first term. 2(3y + 5k) - 2k

What is the difference between emigrate and immigrate? ?