The answer is brain and spinal cord
I would include
- The nucleus: contain genetic info
- Lysosome: clean up things
- Mitochondria: ATP factory
- Ribosome: make protein
- Cell membrane and Cell Wall: maintain and shape the cell etc
<span>Coronary arteries supply blood to the heart muscle.</span>
The biogeochemical cycle has to do with the cycle of nutrients and elements in nature.
<h3>What is the biogeochemical cycle?</h3>
The biogeochemical cycle has to do with the cycle of nutrients and elements in nature; they include the water cycle, carbon cycle, and nitrogen cycle.
The water cycle begins with the evaporation of surface water which is then condensed in the cloud and falls as rain.
The carbon cycle involves the combustion of fossil fuels, the calcification of shells of animals as well as the decay of organisms to release gaseous CO2.
The nitrogen cycle involves the nitrogen content of living things that is returned during decay to the earth as well the fixation of nitrogen by bacteria and also nitrification.
Learn more about biogeochemical cycles:brainly.com/question/1204069
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Answer:
C.
The nucleus contains DNA.
