Holes larger than this will invite larger birds and other predators to invade the box, which can be a danger to the chicks or prompt the invaders to take over the box and evict the current residents. The following chart will help select a birdhouse appropriate for housing a particular species. We not only give you an idea of the specification requirements of the house or platform, but also give you some tips about where and how high to mount it.
Why does the ocean not boil or freeze solid in different regions of the world? Heat is transported by oceanic and atmospheric circulation The pycnocline isolates the majority of the world ocean from heating and cooling brought on by solar energy fluctuations What is the main reason for the stratification in the north polar waters?
Ocean water freezes just like freshwater, but at lower temperatures. Fresh water freezes at. but seawater freezes at about. , because of the salt in it. When seawater freezes, however, the ice contains very little salt because only the water part freezes. It can be melted down to use as drinking water.