The brain and the spinal cord.
<span>The cilia and flagella of eukaryotic cells are made up of specifically designed microtubules. Microtubules are part of the cytoskeleton and are nucleated. They play an vital role in several cellular processes and also play a part in maintaining a cell's structure.</span>
Explanation:
Living organisms in the biosphere release carbon dioxide into the atmosphere during cellular respiration. This carbon dioxide in the atmosphere dissolves into the hydrosphere mainly oceans and lakes at the interphase between the atmosphere and hydrosphere. The dissolved carbon dioxide can be utilized again by photosynthetic planktons through photosynthesis. The plankton from the base of a large food web in the marine environment creating large biomasses. When these organisms die, they sink to the bottom of the oceans or lakes taking carbon to the bottom of the oceans. The biomass accumulates with sediments and over many years becomes part of the geosphere as sedimentary rocks.
The rocks may become exposed to the earth’s surface over millions years by tectonic plants. The exposed rocks will become vulnerable to agents of erosion that will unlock the carbon-based minerals in the rocks so they become available to plants and other organisms in the biosphere..and the cycle continues.
Learn More:
For more on the Carbon cycle check out;
brainly.com/question/11507766
brainly.com/question/10367221
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