Answer:
A) The proteins float
Explanation:
The proteins float around freely
Contains the pericardial cavity and surrounds<span> the remaining thoracic organs. ...</span>Houses the spinal cord<span>, the digestive organs, which opens to the exterior at the anus.
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The temperature depends to the certain point
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.
