I honestly think that a or d would be the best options. I would start with D and if that doesn't work try a.
A layer of ice on the surface keeps the water temperature warmer than the air temperature.
Answer:They have a large number of mitochondria.
Answer:
Hope this helps :)
Explanation:
Photosynthesis converts light energy to chemical energy.
A toaster converts electrical energy to thermal energy.
A wind turbine generator converts kinetic energy to mechanical energy.