Science, asked by mohini8426, 2 months ago

Give scientific reason

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Answered by aidenfernandes0407

Answer:

1: Sponges and Hydra do not possess any circulatory system. The water in which they live brings food and oxygen as it enters their bodies. The water carries away waste materials and carbon dioxide as it moves out. Thus, these animals do not need a circulatory fluid like the blood.

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