If the half-time of krypton-81 is 229,00 years, how much krypton-81 was present when the ice first formed

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

wher is the rest of the question

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest

the objects have the same charge.