Should be A.! i hope this helped
It thaws to a depth of a few centimetres and becomes soggy and wet.
Answer:
B. The foam has tiny air pockets that slow the transfer of thermal
energy away from the water in the pipe
Explanation:
Air is a poor conductor thermal energy and can be used as good insulator. Insulators are poor conductors of heat.
When it is freezing outside, the temperature gradient will tend to adjust to the ambient one. The water in the pipe being at a higher temperature will tend to lose heat energy to the surrounding.
The layer of foam will prevent this form of heat exchange from happening because of the air pocket that is present around.
Becuase they were fully aquatic unlike tetrapods today
