A protein that is part of the synaptonemal complex (SC)
The tapeworm is a parasite, and the dog is a host.
Because the government cant tax it or tell it what to do.
but really, it's not considered property (ponds are) so you can't say "no trespassing" on a body of water, only the surrounding land. comment if you need more info
The heaviest elements settled in the Earth's center.
The Earth on the other hand starts with a core of iron and radioactive materials such as uranium and plutonium, which release energy in the form of heat, through a process known as nuclear fission. It went through a fusion stage - a "liquid-pasty" state - which allowed that, due to gravity, the denser materials sank towards the center, while the lighter ones floated towards the crust, a process called planetary differentiation.