A meteorite is OA) a rock from space that strikes Earth
OB) a rock from space that is outside Earth's atmosphere
C) a group of asteroids located between Mars and Jupiter

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

Which of the following has expanded our knowledge of the universe beyond our solar system the most? a. manned space travel b. the hubble space telescope c. the pioneer and voyager missions d. the international space station

The half-life of a certain element is 100 days. how many half-lives will it be before only one eighth of this elementremains?