The kidneys.
The kidneys keep blood isotonic by removing excess salt and water through urine.
Eukaryotic cells have a nucleus, while prokaryotes have DNA that floats around inside the cell.
<h3>Difference between prokaryote and eukaryote</h3>
Eukaryotic cells contain membrane aound cell organelles, such as the nucleus, while on the other hand, prokaryotic cells do not have membrane around nucleus. Eukaryotes have mitochondria and chloroplasts, the cell wall, and the structure of chromosomal DNA whereas prokaryote have no organelles.
So we can conclude that Eukaryotic cells have a nucleus, while prokaryotes have DNA that floats around inside the cell.
Learn more about cell here: brainly.com/question/13123319
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Heat water using the sun during the day, and use it during the cold night.
Use a solar panel to charge batteries during the day, and use the power at night.
Answer:
C
Explanation:
Observing is looking or listening not weighing or measuring. So the only possible answer is C.