It depends on which species of Swallowtail you are referring to but most prefer areas where their foodplants (the plants that both the caterpillars and adults feed from) are plentiful. Depending upon the species, habitats could and do include deserts, rainforests, lowland meadows and mountainous regions.
The butterfly acts as a pollinator in its environment.
Butterfly Conservation's motto is 'Saving butterflies, moths and our environment'.
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in pollination
Yes this is Homeostaysis .
They carry polen from one plant to another,
Yes, as do all living things.
That will depend upon the species of butterfly and what flowering plants are available in the local environment. Here in the UK the common butterfly species are particularly attracted to Buddleia shrubs, popularly known as "Butterfly Bush".
The Emperor Butterfly is found throughout central Europe. In Britain they are confined to the south. They thrive in woodlands and can be found in many wooded areas.
A butterfly is a very good bioindicator for many reasons. If there are fragile butterflies there is food, water, and balance in the environment.
According to the Australian Government website for environment, there are twenty-eight different species of butterfly that inhabit the Christmas Islands.
While there are anecdotal reports of toxicity to Monarch butterfly larva, there is no scientific evidence of any danger to the environment from GM crops.