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It is used so that no outside bugs / diseases / animals are introduced to Australia.
To kill pesty bugs
There are many different plant adaptations that are common in plants these days. There is an orchid in Australia that tricks hornets into fertilizing it and just flowers in generally are adaptations to get bugs to fertilize the seeds.
There is 1017018 bugs known to man so far.
It depends on the size of the bugs, I suppose...
10 bugs on each stick
More bugs then you can count. (Atleast til you die.)
because that is the bugs shelter and environment
They are food for the bugs. If no bugs ate the eggs, just think how many there would be.
Eat up the bugs ^^
A trillion