Turn lights off, unplug electronics, and use solar energy
Bode law, a planet<span> was believed to exist </span>between<span> .... An Astronomer's Account of the </span>Missing Planet Between<span> Mars and </span>Jupiter<span> as Interpreted </span>Jupiter<span> ·</span>Saturn<span> · Uranus · Neptune.</span>
option B open system
because in open system energy and mass can escape from the system or can be added to it.