Acertain radioisotope has a half-life of 7.32 days. what percentage of an initial sample of this isotope remains after 36 days?

During which movies do spring tides new moon first quarter waxing gibbous waxing

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

Polar bears give birth and hunt on sea ice. which of the following would polar bears survive during the melting of arctic ice? growing another layer of fur during summer migrate inland to search for different food sources staying put until the ice refreezes sticking to the usual diet of seals