Algae or blue green algae
Many people might think the answer to this question would be an atom, but not in life. The structures go like this from largest to smallest: Ecosystem, Community, Organism, Organ system, Organ, Tissue, Cell.
I would say the arch bridge because the Romans used it, but I'm not completely sure. Beam and pillar as used by the Egyptians.
The oldest fossils of multicellular organism are from tiny algae that lived about 1.5 billions years ago. By 600 million years ago the first multicellular animals-jellyfish-like organisms -had evolved.
Atom, molecule, cell, tissue, organ, organ system, organism
Occurs when a new organism is formed from the same organism
your heart
Volvox
The oldest fossil organism found lived approximately 3.5 billion years ago. The fossil is that of a single-celled organism called Archaea.
The oldest known individual living organism is a bristle-cone pine tree in the mountains of California. It is close to 5000 years old.
No. Bacteria are.
Tariffs
cell
spines
Bacteria
The oldest known living organisms are single-celled archaebacteria (archaea). The oldest known individual living organism is a bristle-cone pine tree in the mountains of California. It is close to 5000 years old.
Green algae is the oldest ancestor of all land dwelling (non-marine) plants.
Sponges