Organisms
Organisms are all around us and in us! Every living thing is pretty much a different type of organism with lots of different cells in it! Hope this helps!
Would love brainliest if possible;)
Answer:
fills container, no visible shape, flows
Answer:
Shape of Red Blood Cells Erythrocytes are biconcave discs with very shallow centers. This shape optimizes the ratio of surface area to volume, facilitating gas exchange. It also enables them to fold up as they move through narrow blood vessels.
Because they are non renewable sources of energy and they took billions of years to form.