Which theory states that our inner planets are rocky because rocks and metals combine at extreme temperatures, while the outer planets are gaseous because hydrogen compounds condense at colder temperatures? hubble doppler kepler nebular

The nebular theory states that our inner planets are rocky because rocks and metals combine at extreme temperatures, while the outer (Jovian) planets are gaseous because hydrogen compounds condense at colder temperatures, and they are further from the sun. In contrast to our solar system’s gas giants, the deepest and most extensive direct imaging surveys of orbital space to date have shown that the vast majority of gas-giant planets tend to cling to their parent stars. Most of those identified tend to shun orbital zones far from their parents.

Nebular!!  That is the answer.

explanation:

crosscutting concepts have application across all domains of science. as such, they are a way of linking the different domains of science. they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.