Cells because all living organisms have cells
<u><em>Answer: The Calvin cycle is a process that plants and algae use to turn carbon dioxide from the air.</em></u>
<u><em></em></u>
<u><em>hope its helps you.</em></u>
<u><em> keep smiling be happy stay safe</em></u>
Primary succession is ecological succession that begins in essentially lifeless areas, such as regions in which there is no soil or where the soil is incapable of sustaining life because of recent lava flows, newly formed sand dunes, or rocks left from a retreating glacier.
These three groups are monotremes, marsupials, and the largest group, placental mammals.
