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Cells
Cells and Organs
A unicellular organism is an organism that is only made of one cell - such as Paramecium - whereas a multicellular organism is built up of millions and millions of cells forming tissue, organs, bones etc ( such as humans ).
Well actually, a cell makes up tissue. Then the tissue makes up an organ, the organ makes the organ system, then the organ system makes up an organism. But the exact amount of cells in an organism is unknown, but it is estimated to be 100 trillion.
Funji and bacteria
A different organism
Chromosome
The genus and species of the organism makes up the scientific name, but most of the time the genus and species are in latin;which makes it hard to pronounce.
genus & species
Tissue. Tissue is made up of cells.
environment
This question is highly unspecific but water makes up a large part of the body