I believe that we use them as pollinators for flowers and plants, like bees, but a backup, but if you mean like in tests and experiments then I do not know, sorry.
There are thousands of species around the world, and about 900 just here in the United States. In any given state, there are likely a few hundred that you could find. Some of the most common and widespread in the US and Canada are the monarch, tiger swallowtails (actually several species), cabbage white, common sulfur, painted lady, mourning cloak, pearl crescent, field crescent, question mark, and azure (also a complex of a lot of similar species).
Their is so many cultures in the world, their is just so many in the world, we do not know
Their is so many cultures in the world, their is just so many in the world, we do not know
how many canyons are in the world
How many of the world's population has what?
How many Anna's are in the world?
How many Anna's are in the world?
how many dictionaries in the world
There are three distinct regions with tundra habitats in the world: the Arctic tundra, Antarctic tundra, and alpine tundra. Each tundra region has its own unique characteristics and ecosystems, with the Arctic tundra being the largest and most well-known.
how many Freya's are there in the world
No one knows how many animal are in the world there are many species in the world not be discovered yet