Carbon.
Fossils.
The past tense of contain is contained.
The past perfect tense of the verb "contain" is "had contained."
The past perfect tense is had contained.
Living with the Past was created on 2002-04-30.
Living in the Past - song - was created in 1969.
Both forms are contained.
The past form of live is lived (past simple - lived; past continuous - was/were living; past perfect - had lived; past perfect continuous - had been living).
Past continuous is formed with - was/were + verb + ing ie was living, were living
The element "Oxygen".
If you're living in the past, it means that you cannot move forward from past events and are focused on things that cannot be changed now.
An element is one of 115 on the periodic table. A liquid is made up of atoms, of a specific element, or compound of elements, loosely compacted together. There is gaps enough between the atoms, that they can slide past each other. In this case element is the simplest form of matter. However, an element is made up of one atom of that element, which contains protons, neutrons and electrons, specific to the elements placement on the periodic table. (Hydrogen is 1, therefore it has one proton and one electron. Further in, protons, electrons and neutrons can be comprised of quarks, neutrinos etc. but this is higher level physics and chemistry.