Organisms that live in freshwater and marine biomes have developed unique adaptations that aid in their survival. which of the following adaptations would be more useful for an animal in a marine biome than for an animal in a freshwater biome? a. flippers and flattened tails b. smooth, nearly furless body c. streamlined body d. tolerance to high levels of salinity

d. tolerance to high levels of salinity

Marine biomes are occupied with salt water. The level of salinity will vary from low to high. The cells of the animals remain hypertonic they do not allow more salt to enter into their body and attain more adaptation against salinity.

Well probably a tolerance to the high salinity levels present at sea
as most organisms can only live a certain salinity levels a marine animal would have to adapted to high salinity levels to prevent  loss of water via osmosis plus the levels off potable water are presumably low so they would have to be well adapted to the high salt levels of ocean water 

During total solar eclipse A solar eclipse occurs when a portion of the Earth is engulfed in a shadow cast by the Moon which fully or partially blocks sunlight. This occurs when the Sun, Moon and Earth are aligned.