1.

Identify the animal with the following characteristics: 1. They are very simple. 2. They have a porous body. 3. Water flows in and out of the pores. 4. Oxygen and nutrients are absorbed directly through the water.

Answer»

Identify the animal with the following characteristics:
1. They are very simple.
2. They have a porous body.
3. Water flows in and out of the pores.
4. Oxygen and nutrients are absorbed directly through the water.




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