It could go either way but I would say soil. Hope this helps.
Plant cells<span> have a </span>cell<span> wall, chloroplasts and other specialized plastids, and a large central vacuole, which are </span>not found<span> within </span>animal cells<span>.</span>
Pioneer species include bacteria and lichens that can grow on bare rock and help make soil. Secondary succession occurs in a formerly inhabited area that was disturbed. Soil is already in place, so pioneer species include small plants such as grasses.
Answer:
Yes, there could be a fourth statement to cell theory
Our sleep cycles typically last usually 90 to 110 minutes on average.
