Answer:
Explanation:
Organisms have different forms of circulatory systems. Humans have a closed circulatory system, while many mollusks and other invertebrates have an open system. In a closed circulatory system, blood is enclosed within blood vessels.
D. Chloroplast is only found in plant cells not in animal cells
C. employment and unemployment
because it is the only one that makes sense
Answer:
Porque puede decirnos si su información incorrecta o información correcta