Honestly it would be the Exosphere<span> but since that's not one of the choices it would be the Thermosphere. </span>
Among others, both plants and animals need oxygen and water. They also both need space and air.
8H2. The actual equation doesn't make sense for 8H2. This is because in compounds it always says the number of atoms after the element symbol, but in this case, there is an 8 before it. This means that it isn't a compound.